A rope is 63 meters long, cut off 9 meters, and make a skipping rope every 2 meters, how many skipping ropes can be made?
一根绳子长63米，剪去9米，剩下的每2米做一根跳绳，可以做多少根跳绳？
<gadget id="calculator">63 - 9</gadget>
<output>54</output>

<gadget id="calculator">54 / 2</gadget>
<output>27</output>

<result>27</result>