Some table tennis balls, if each box contains 6 pieces, can hold 36 boxes. If each box contains 9 pieces, how many boxes can be filled?
一些乒乓球，如果每盒装6个，可以装36盒．如果每盒装9个，可以装几盒？
<gadget id="calculator">36 / 9</gadget>
<output>4</output>

<gadget id="calculator">6 * 4</gadget>
<output>24</output>

<result>24</result>