#!/usr/bin/python3
if __name__ == "__main__":
    from calculator_1 import add, sub, mul, div
a = 10
b = 5
c = add(a, b)
d = sub(a, b)
e = mul(a, b)
f = div(a, b)
print("{} + {} = {}".format(a, b, c))
print("{} - {} = {}".format(a, b, d))
print("{} * {} = {}".format(a, b, e))
print("{} / {} = {}".format(a, b, f))
