I'm confused, explain to me what it is I have to do

Question

Zeno is walking in a straight line. With each step, he covers half the remaining distance between him and the end of his path, which is a total of 8 feet. After 4 steps, he will have walked _____ feet.

Answer 1

after step 1 he walks (1/2)8=4 feet

after step 2 he walks (1/2)4=2 feet

after step 3 he walks (1/2)2=1 foot

after step 4 he walks (1/2)1=1/2 foot

he walks 4+2+1+(1/2)=7 1/2 feet and he will never reach the end of his path because he is always taking half of some distance, no matter how small