Section 1.15 challenge

print ("The calculation below are my efforts to meet the challenge set in Section 1.15.")

print ("I will take a rectangle.  The sides are 20 cm and 30 cm.")

input1=input("Number1>")
input2=input("Number2>")
input3=input("Number3>")
input4=input("number4>")
number1=int(input1)
number2=int(input2)
number3=int(input3)
number4=int(input4)
result=number1+number2+number3+number4
output=str(result)
print (input1+"+"+input2+"+"+input3+"+"+input4+"="+output)
print ("The distance around the rectangle is 100 cms.")