There are two piles of coal, (3/5) of pile A is equal to (9/10) of pile B, pile A is 24 tons more than pile B, how much coal is there in pile A.
有两堆煤，甲堆的(3/5)与乙堆的(9/10)相等，甲堆比乙堆多24吨，甲堆有煤多少．
<gadget id="calculator">9 / 10</gadget>
<output>9/10 = around 0.9</output>

<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">(9/10) / (3/5)</gadget>
<output>3/2 = around 1.5</output>

<gadget id="calculator">1 * (3/2)</gadget>
<output>3/2 = around 1.5</output>

<gadget id="calculator">(3/2) - 1</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">24 / (1/2)</gadget>
<output>48</output>

<gadget id="calculator">48 + 24</gadget>
<output>72</output>

<result>72</result>