A pile of coal has been shipped (2/5), and there are 360 tons left. How many tons is this pile of coal?
运一堆煤，已经运了(2/5)，还剩下360吨．这堆煤原有多少吨？
<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">1 - (2/5)</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">360 / (3/5)</gadget>
<output>600</output>

<result>600</result>