For a rope, cut off the full length (1/4) for the first time, cut off the rest (3/8) for the second time, and finally there are 15 decimeters left. How many decimeters are there in this rope?
一条绳子，第一次剪去全长的(1/4)，第二次剪去剩下的(3/8)，最后还剩下15分米，这条绳子原来有多少分米？
<gadget id="calculator">3 / 8</gadget>
<output>3/8 = around 0.375</output>

<gadget id="calculator">1 - (3/8)</gadget>
<output>5/8 = around 0.625</output>

<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1 - (1/4)</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">15 / (5/8) / (3/4)</gadget>
<output>32</output>

<result>32</result>