def extract$($s: str$,$ start: int, stop: int$)->$ str:

$"""$Return the substring of s from index start $($inclusive$)$ to index

stop $($exclusive$).$

Enter your answer in decimal form. Round to two decimal places if needed $($e$.$g$.$ enter $0\mathrm{.}1$

as $0\mathrm{.}1,$ enter $0\mathrm{.}2345$ as $0\mathrm{.}23$ or $0\mathrm{.}24).$