John has taken 10 pictures every day for the past 3 years.  He saves them in raw format so each memory card can store 50 images.  Each memory card costs $60.  How much does he spend on memory cards?
He takes pictures for 3*365=<<3*365=1095>>1095 days
So he takes 10*1095=<<10*1095=10950>>10,950 pictures
That means he needs 10950/50=<<10950/50=219>>219 memory cards
So he spends 219*60=$<<219*60=13140>>13140 on memory cards
#### 13140