7744 Three PHP Calculators Needed

I have 3 Calculators that need to be done. One of them just simply one number times another number and that's it. The other 2 are fairly simply. I have all the mathematical formulas needed to get the results which I will include in a txt readme file. I also will include layout of all forms/tables/text of the 3 separate WebPages which will display the calculators. I want these to be done in PHP. I have max budget of $200 and would like to be delivered within max of 3 days one I select bidder. Winning bidder needs IM service.