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