A coach keeps records on the basketball team. When a team member shoots a two free throws 65% of the time the first free throw is made. 70% of the time the second free throw is made. What percent of the time do both free throws need to be made inorder to for these events to be independent?

so I know that .65*.7= 45.5%

so 45.5% of the time they have to make both

I know that I have to multiply the percents together, but I do not understand why I have to multiply the numbers? Thanks