When transporting a pile of coal, 12 tons more (1/4) of the total was transported on the first day, and (1/3) of the total was transported on the second day. At this time, the ratio of what was transported to the rest was 2:1 , how many tons of this pile of coal?
运一堆煤炭，第一天运了总数的(1/4)还多12吨，第二天运的是总数的(1/3)，这时运走的和剩下的比是2：1，这一堆煤炭共多少吨？
<gadget id="calculator">2 * 12</gadget>
<output>24</output>

<gadget id="calculator">24 + 12</gadget>
<output>36</output>

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

<gadget id="calculator">2 * (1/4)</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">2 * (1/3)</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">2 - (1/2) - (2/3) - (1/4) - (1/3)</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">36 / (1/4)</gadget>
<output>144</output>

<result>144</result>