A rope, (3/8) of it is used, and the rest is exactly 7 meters more than the used one. How many meters is this rope originally?
一根绳子，用去它的(3/8)，剩下的正好比用去的多7米．这根绳子原来有多少米？
<gadget id="calculator">3 / 8</gadget>
<output>3/8 = around 0.375</output>

<gadget id="calculator">1 - (3/8) - (3/8)</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">7 / (1/4)</gadget>
<output>28</output>

<result>28</result>