input1 = input("첫 번째 숫자 >> ")
input2 = input("두 번째 숫자 >> ")
output1 = float(input1)
output2 = float(input2)

print("sum =",output1+output2)
print("diff =",output1-output2)
print("mul =",output1*output2)
print("div =",output1/output2)