#!/usr/bin/python3

""" Fibonacci Module """

def fib(n):
   """ Calculates the n-th Fibonacci number """
   a, b = 0, 1
   for i in range(n):
       a, b = b, a+b
   return a

fib5  = fib(5)
fib10 = fib(10)
fib15 = fib(15) 

product = fib5 * fib10 * fib15

print ("Product is ", product)