A rope is 72 meters long. To cut it into short ropes of the same length, cut it three times. How many meters is each length?
一根绳子长72米，要把它剪成一样长的短绳，剪了三次，每根长多少米．
<gadget id="calculator">3 + 1</gadget>
<output>4</output>

<gadget id="calculator">72 / 4</gadget>
<output>18</output>

<result>18</result>