(1/3) of a pile of sand is 2 tons less than (1/2) of this pile of sand, how many tons is this pile of sand?
一堆沙子的(1/3)比这堆沙子的(1/2)少2吨，这堆沙子是多少吨？
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

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

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

<gadget id="calculator">2 / (1/6)</gadget>
<output>12</output>

<result>12</result>