A rope, after subtracting 9 meters, the remaining part is 3 meters less than the total length (3/4), what is the total length of the rope in meters?
一根绳子，减去9米后，剩下的部分比全长的(3/4)少3米，这根绳子全长多少米．
<gadget id="calculator">9 - 3</gadget>
<output>6</output>

<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

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

<gadget id="calculator">6 / (1/4)</gadget>
<output>24</output>

<result>24</result>