Everybody goes to hell. Hell is Hades - the grave. The Lake of Fire is reserved for the end times and most likely is fairly small considering the billions of people who lived on earth. The Lake of Fire - conceptualized as a place of fire and brimstone where souls burn eternally is often confused with hell (The grave).

Pharoah is another name for King. The Jews had been in Egypt for 400 years, first going there because of drought and starvation happening in Israel. they started off as a free people but gradually the Egyptians turned them into a slave class...by the time of Moses, all Jews born in Egypt were classed as slaves... YHWH is Almighty God, who spoke directly to Moses. As to 'hell', it is simply mans' grave, and NOT a place of torment as taught by some major religions... When death is eliminated, so will Hades [ hell] (Revelation 20:14) And death and Ha′des were hurled into the lake of fire. This means the second death, the lake of fire. This is the same 'lake' [ destruction] where Satan and his demons will also end up... (Revelation 20:10) And the Devil who was misleading them was hurled into the lake of fire and sulphur, where both the wild beast and the false prophet [already were]; and they will be tormented day and night forever and ever. Hell/ Hades is NOT a hot place presided over by Satan. The scriptures make this very clear.

The scripture you cite, (Exodus 7:3), might seem to indicate that Pharaoh was not acting of his own free will,... However, other verses throw some additional light on the matter. - Jehovah did not force Pharaoh to become obstinate. - For example: (Exodus 8:15-KJV) But when Pharaoh saw that there was respite, he hardened his heart, and hearkened not unto them; as the LORD had said. - (Exodus 8:32 - KJV) And Pharaoh hardened his heart at this time also, neither would he let the people go. - (1 Samuel 6:6 - KJV) Wherefore then do ye harden your hearts, as the Egyptians and Pharaoh hardened their hearts? when he had wrought wonderfully among them, did they not let the people go, and they departed? - As you can see all of these verses credit Pharaoh with choosing to be obstinate. He became unreasonable in response to Jehovah's message, (as delivered by Moses and Aaron),...so Jehovah "caused" his heart to become hard when he made request for that which He knew Pharaoh would not consent to. - (Exodus 3: 18,19 NAS) 18",... and you with the elders of Israel will come to the king of Egypt and you will say to him, 'The LORD, the God of the Hebrews, has met with us So now, please, let us go a three days' journey into the wilderness, that we may sacrifice to the LORD our God.' 19"But I know that the king of Egypt will not permit you to go, except under compulsion. - However, Pharaoh was not operating under some sort of divine "mind control". - As the other answers have indicated,...Pharaoh died and went to his grave. The Bible promises that "hell" , (Sheol / Hades) will be emptied during the promised resurrection. - (Revelation 20:13) 13 And the sea gave up those dead in it, and death and Ha′des gave up those dead in them, and they were judged individually according to their deeds.

Pharaoh chose to make the Jews slaves (see Exodus 1:10-11, where he encourages his nation to enslave the Jews and to make their lives difficult). He also hardened his own heart, refusing to listen to Moses or to be swayed by the early plagues (Exodus 5:2, 7:13, 8:11, 8:28). After the first three plagues, we see G-d harden Pharaoh's heart (Exodus 9:12). G-d did this because a normal person would have started to weaken after being punished again and again, and G-d wanted to ensure that Pharaoh would remain his old self long enough to receive the full brunt of the punishment he deserved. Either way, G-d had not caused Pharaoh to sin, to enslace the Israelites or to kill their babies- all of that was his own choice for which he deserved punishment. Pharaoh also deserved punishment for refusing to release the Israelites (at least initially). What's interesting is that we don't see Pharaoh die with the firstborns (although Jewish tradition records that he was a firsborn), nor do we see him die at the sea with the rest of his army. Jewish tradition teaches that Pharaoh was spared and eventually repented for his sins.