How would i find the mean of these numbers in a for loop?

Question

this is my code so far
a = int(input("enter your first number"))
b = int(input('enter your second number must be divisible by 3'))
count = 0
for threes in range(a,b):
if threes%3 == 0:
print(threes)

I am confused as you cant use the mean function because it is not a list

Answer 1

How do you sum the numbers in a loop?