There are two piles of coal, the amount of coal stored in the second pile is (5/8) of the first pile. 30% of the first pile was transported, exactly 12 tons were transported. How many tons is the second pile of kerosene?
有两堆煤，第二堆存煤量是第一堆的(5/8)．第一堆运走30%，正好运走12吨．第二堆煤油多少吨？
<gadget id="calculator">30 / 100</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">12 / (3/10)</gadget>
<output>40</output>

<gadget id="calculator">5 / 8</gadget>
<output>5/8 = around 0.625</output>

<gadget id="calculator">40 * (5/8)</gadget>
<output>25</output>

<result>25</result>