设计一个简易的参数计算器。

caculate = input()

num = input().split(",")

n1 = int(num[0].split("=")[1])

n2 = int(num[1].split("=")[1])

if caculate[1] == '+':

result = n1+n2

elif caculate[1] == '-':

result = n1-n2

elif caculate[1] == '*':

result = n1\*n2

elif caculate[1] == '/':

result = n1/n2

print(result)