A bundle of wires is 36 meters long, and the length used for the first time is 4 meters more than the total length (3/4); the length used for the second time is 1 meter less than the first time (3/31). How much rice did you use the second time?
一捆电线全长36米，第一次用去的长度比全长的(3/4)多4米；第二次用去的长度比第一次的(3/31)少1米．第二次用去多少米？
<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">36 * (3/4)</gadget>
<output>27</output>

<gadget id="calculator">27 + 4</gadget>
<output>31</output>

<gadget id="calculator">3 / 31</gadget>
<output>3/31 = around 0.096774</output>

<gadget id="calculator">31 * (3/31)</gadget>
<output>3</output>

<gadget id="calculator">3 - 1</gadget>
<output>2</output>

<result>2</result>