 
 <prompt> ```A school choir need robes for each of im 30 singers. Currently, the school get only 12 robes so dem decide say make dem buy the rest. If each robe cost $2, how much the school go spend?``` <response>: ```School gats buy 30 - 12 = 18 robes.
So school go spend 18 x $2 = $36.

The answer go be 36.``` 