Two piles of coal are removed from pile A (1/4), and part of pile B is removed (3/5). At this time, the weight of pile A is (3/5) the weight of pile B, and pile A is originally 120 Ton of coal, how many tons does B pile have?
两堆煤，从甲堆运走(1/4)，乙堆运走一部分后剩下(3/5)，这时甲堆重量是乙堆重量的(3/5)，甲堆原有120吨煤，乙堆原有多少吨？
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1 - (1/4)</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">120 * (3/4)</gadget>
<output>90</output>

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

<gadget id="calculator">90 / (3/5) / (3/5)</gadget>
<output>250</output>

<result>250</result>