What is the gcf of 8 and 36

How do i make someone brainliest? (if you answer me, i might be able to make you brainliest! )

Sasha drank 8 bottles of water everyday for a week. how many bottles of water did she drink in total?

The u-drive rent-a-truck company plans to spend $13 million on 320 new vehicles. each commercial van will cost $25 comma 000, each small truck $50 comma 000, and each large truck  $80 comma 000. past experience shows that they need twice as many vans as small trucks. how many of each type of vehicle can they buy?