Devnote: The program prints multicolored text which you can't see in a .txt file. I'd reccommend running it yourself if you weren't planning to already.

Welcome to Kite Calculator, can I take your order.
Let's start with getting the dimensions of your kite.
Please enter the width of your kite in cm: 420
Oh no! It looks like something went wrong.
Please make sure your width is a number between 1 and 400 and try again.
Please enter the width of your kite in cm: 69
Please enter the height of your kite in cm: 273

Now, let's do some math.
Your kite is 69.000000cm wide and 273.000000cm high.
I'm sure it's beautiful.

Your kite has an area of 0.941850 square meters.

Your kite has an aspect ratio of 0.252747. Your kite is too wide, and will be unstable. Consider widening it or flying it sideways.
Your kite has a mass of 0.127150 kilograms.
The gravitational pull on your kite is 1.246958 newtons.