Sean buys 3 cans of soda, 2 soups, and 1 sandwich.  Each soup cost as much as the 3 combined sodas.  The sandwich cost 3 times as much as the soup.  If the soda cost $1 how much did everything cost together?
The soda cost 3*1=$<<3*1=3>>3
So the soups cost 2*3=$<<2*3=6>>6
The sandwich cost 3*3=$<<3*3=9>>9
So the total cost of everything was 3+6+9=$<<3+6+9=18>>18
#### 18