Your grandfather put some money into an account for you on the day you were born. You are now $18$ years old and are allowed to withdraw the money for the first time. The account currently has $$6,863$ in it and pays an interest rate of $4\%.$

a$.$ How much money would be in the account if you left the money there until your ${25}^{th}$ birthday?

b$.$ What if you left the money until your ${65}^{th}$ birthday?

c$.$ How much money did your grandfather originally put into the account?

a$.$ How much money would be in the account if you left the money there until your ${25}^{th}$ birthday?

The amount that would be in the account if you left the money there until your ${25}^{th}$ birthday would be $ $($Round to the nearest dollar.$)$