There are three piles of coal, A, B, and C. Pile C has 6,000 tons of coal, and Pile B belongs to C (5/6). Pile A has less coal than Pile B (1/5). How many tons of coal is less in Pile A than Pile B?
甲、乙、丙三堆煤，丙堆煤6000吨，乙堆煤是丙的(5/6)，甲堆煤比乙堆少(1/5)，甲堆煤比乙堆少多少吨？
<gadget id="calculator">5 / 6</gadget>
<output>5/6 = around 0.833333</output>

<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">6_000 * (5/6) * (1/5)</gadget>
<output>1_000</output>

<result>1_000</result>