Cloud based application that estimates the value of Pi (π) using Monte Carlo method, using Google App Engine, AWS Lambda and EC2

The basic idea is to create a simple cloud based application that does some calculations. Data goes from Google App Engine for calculation to AWS and back to Google App Engine for presentation, so some calculation are done in AWS and the data goes to Google App Engine for presentation. It should be written in python, and it needs a very basic front-end for user input and graphs (3 basic pages max).