5-Write a Scheme procedure that takes a list and returns the sum of the even numbers in the list. For example, (sumeven ( 1 2 6 4 5)) returns 12 and (sumeven '( 1 2 6 (4 5)) returns 12. Trace the function with one of the provided examples. 6-Write a Scheme procedure that takes a list as a parameter and returns a list identical to the parameter except the last three elements has been deleted. For example,(new-list '(a b c d e)) returns '(a b); (new-list '(a b (cd) e)) returns '(a). Trace the function with one of the provided examples