2020-10-06

import math s1,op,s2 = input().split()if op == "+" or op == "-" or op =="*" or (op =="/"and math.fabs(float(s2)) >= 1e-10): if op == "+": result = float(s1) + float(s2) if op == "-": result = float(s1) - float(s2) if op == "*": result = float(s1) * float(s2) if op == "/": result = float(s1) / float(s2) print("%.2f" % result)else: print("Wrong input!")