rope is 51 meters long, 33 meters are cut off, and the remaining ropes are used to make 9 skipping ropes. How many meters is each rope?
一根绳子长51米，剪去33米，剩下的绳子要做9根跳绳，每根长多少米？
<gadget id="calculator">51 - 33</gadget>
<output>18</output>

<gadget id="calculator">18 / 9</gadget>
<output>2</output>

<result>2</result>