print ("Pleas enter Num1 : ")
value_1 = input()
value_1 = float(value_1)
print ("Please enter function : ")
value_2 = input()
#value_2 = str(value_2)
print ("Pleas enter Num2 : ")
value_3 = input()
value_3 = float(value_3)

if value_2 == "*":
    value_4 = value_1 * value_3
elif value_2 == "/":
    value_4 = value_1 / value_3
elif value_2 == "+":
    value_4 = value_1 + value_3
elif value_2 == "-":
    value_4 = value_1 - value_3
else:
    print("no no no  no non no no no no no no no no no  no  no no ")

print (value_4)