John and his two brothers decide to split the cost of an apartment.  It is 40% more expensive than John's old apartment which costs $1200 per month.  How much does John save per year by splitting the apartment compared to living alone?
His old apartment cost 1200*12=$<<1200*12=14400>>14,400 per year
His new apartment 1200*1.4=$<<1200*1.4=1680>>1680 per month
That means it cost 1680/3=$<<1680/3=560>>560 per month
So it cost 560*12=$<<560*12=6720>>6720
So he saves 14400-6720=$<<14400-6720=7680>>7680
#### 7680