A rope, 24 meters was used for the first time, and 2/5 of its full length was used for the second time, leaving 36 meters in the end. How many meters was the rope originally?
一根绳子，第一次用去24米，第二次用去了全长的(2/5)，最后剩下36米，这根绳子原有多少米？
<gadget id="calculator">24 + 36</gadget>
<output>60</output>

<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">1 - (2/5)</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">60 / (3/5)</gadget>
<output>100</output>

<result>100</result>