There is a pile of cement. On the first day (1/4) of this pile of cement was shipped, and on the second day (2/3) of the first day was shipped. After two days of transportation, there were still 84 tons left unshipped. This pile of cement has How many tons?
有一堆水泥，第一天运了这堆水泥的(1/4)，第二天运的是第一天的(2/3)，运了两天后还剩84吨没有运，这堆水泥有多少吨？
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">(1/4) * (2/3)</gadget>
<output>1/6 = around 0.166667</output>

<gadget id="calculator">1 - (1/4) - (1/6)</gadget>
<output>7/12 = around 0.583333</output>

<gadget id="calculator">84 / (7/12)</gadget>
<output>144</output>

<result>144</result>