For a pile of coal, (1/8) of the total amount is removed for the first time, (1/6) of the total amount is removed for the second time, and 680 tons more than the first time is removed for the second time. How many tons is this pile of coal?
一堆煤，第一次运走总数的(1/8)，第二次运走总数的(1/6)，第二次比第一次多运走680吨．这堆煤有多少吨？
<gadget id="calculator">1 / 6</gadget>
<output>1/6 = around 0.166667</output>

<gadget id="calculator">1 / 8</gadget>
<output>1/8 = around 0.125</output>

<gadget id="calculator">(1/6) - (1/8)</gadget>
<output>1/24 = around 0.041667</output>

<gadget id="calculator">680 / (1/24)</gadget>
<output>16_320</output>

<result>16_320</result>