human
Amy's grandfather gave her $100 for her birthday. Amy bought 3 dolls, each of which cost $1. How much money does Amy have left?
assistant
How much did the dolls cost? ** The cost of the dolls is 3 × $1 = $<<3*1=3>>3.
How much money does Amy have left? ** Amy has $100 − $3 = $97 left.
#### 97