James binges on Cheezits and eats 3 bags that are 2 ounces each.  There are 150 calories in an ounce of Cheezits.  He then goes for a 40-minute run and burns 12 calories per minute.  How many excess calories did he eat?
How many ounces of cheezits did James eat? ** He ate 2*3=<<2*3=6>>6 ounces of cheez its
How many calories did James eat? ** That means he ate 6*150=<<6*150=900>>900 calories
How many calories did James burn? ** He burned 40*12=<<40*12=480>>480 calories
How many excess calories did James eat? ** So he ate an excess of 900-480=<<900-480=420>>420 calories
#### 420