Anne drops a mirror and breaks it into 60 pieces. She sweeps up half of them, then her cat steals 3 pieces and her boyfriend picks up 1/3 of the remaining pieces. How many pieces does her boyfriend pick up?
First find the number of pieces left after Anne sweeps up: 60 pieces / 2 = 
<gadget id="calculator">60/2</gadget>
<output>30</output>
30 pieces.
Then subtract the number her cat takes: 30 pieces - 3 pieces = 
<gadget id="calculator">30-3</gadget>
<output>27</output>
27 pieces.
Divide that number by 3 to find how many pieces her boyfriend picks up: 27 pieces / 3 = 
<gadget id="calculator">27/3</gadget>
<output>9</output>
9 pieces.

<result>9</result>