The first sentence of an AP article about McCain’s 2007 tax return:

Republican presidential candidate John McCain earned a total of $405,409 last year and donated a quarter of it to charity, according to tax returns that provide only a partial picture of his family’s enormous wealth.

Now, from an AP article about Obama’s 2007 tax return:

Democratic Sen. Barack Obama and his wife, Michelle, made $4.2 million last year as widespread interest in the presidential candidate pushed the sales of his two books

Google Calculator, take it away!

4,200,000 / 405,409 = 10.3599081