The goods in pile A are 10 tons more than 40% of pile B, and pile A has 200 tons, so how many tons does pile B have.
甲堆货物比乙堆货物的40%多10吨，甲堆有200吨，则乙堆有多少吨．
<gadget id="calculator">200 - 10</gadget>
<output>190</output>

<gadget id="calculator">40 / 100</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">190 / (2/5)</gadget>
<output>475</output>

<result>475</result>