Simple PHP form

Hello, I've got a sql database with fields and few data Id - Name - Water - Sucker - Flour 1 - Iris - 60 - 20 - 20 2 - Ostra - 40 - 10 - 50 3 - Paris - 30 - 60 - 10 4 - Ristro - 25 - 33 - 42 I'd like a very simple page where user select two name and a button to validate. After validation, a result appear. The result is the average of Water - Sucker and Flour Example Recipe 1 : [ -- (here the user the name of the recipe) --] data example : Iris Recipe 2 : [ -- (here the user the name of the recipe) --] data example : Ristro Validation : [ -- (here the user click a button) --] Result = Water - Sucker - Flour 42.5 % - 26.5 % - 31 % Php has calculated the average of each ingredient In the example : Iris Water = 60 , Ristro example = 25 60 + 25 = 85 85/2 = 42.5 Same for Sucker and Flour. I hope that I'm clear. :) I will pay with paypal. I'm not a company, no need invoices. Thank you.