Use a 32 cm long iron wire to make a rectangular frame. If the length is 9 cm, what is the width in cm?
用一根长32厘米的铁丝做一个长方形框架，如果长是9厘米，宽就是多少厘米．
<gadget id="calculator">32 / 2</gadget>
<output>16</output>

<gadget id="calculator">16 - 9</gadget>
<output>7</output>

<result>7</result>