human
Sally bought 3 photograph frames, each costing her $3. She paid with a $20 bill. How much change did she get?
assistant
How much did the frames cost? ** She bought the frames for 3 × $3 = $<<3*3=9>>9.
How much change did she get? ** Sally got $20 - $9 = $<<20-9=11>>11 in change.
#### 11