How do annihilationists respond to verses that indicate eternal hell fire?

Matthew 18:8: >8 And if your hand or your foot causes you to sin, cut it off and throw it away. It is better for you to enter life crippled or lame than with two hands or two feet to be thrown into the eternal fire. Mark 9:43: >43 And if your hand causes you to sin, cut it off. It is better for you to enter life crippled than with two hands to go to hell, to the unquenchable fire. Isaiah 66:24 >24 “And they shall go out and look on the dead bodies of the men who have rebelled against me. For their worm shall not die, their fire shall not be quenched, and they shall be an abhorrence to all flesh.” Matthew 25:41 >41 “Then he will say to those on his left, ‘Depart from me, you cursed, into the eternal fire prepared for the devil and his angels. All of these verses pretty clearly indicate an "unquenchable fire" or an "eternal fire". So what do annihilationists make of these passages?