def right_zeros(n):
	z = 0
	while True:
		n, r = divmod(n, 10)
		if n == 0 or r != 0:
			return z
		z += 1
 
print(right_zeros(123000))
print(right_zeros(102030))
print(right_zeros(123123))
print(right_zeros(10))
print(right_zeros(0))
print(right_zeros(1))