autoNumeric.js ..... anyone, PLEASE help!

I posted last week but no luck, so i am giving this another shot. I am trying (and failing) to implement autoNumeric.js into this.

I have a form that does simple math, and i am trying to add commas and decimals for numbers…so 3000 is 3,000 and and a dollar field would be 50.00, or 5,000.00

I have tried and failed, maybe i am not reading the docs properly but cant seem to wrap my head around this. For the example below, the first and last fields would be dollar values. Please assist.