One shipment (2/5) is 40 tons less than the rest, how many tons are removed?
一批货物运走(2/5)，比剩下的少40吨，运走多少吨？
<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">1 - (2/5) - (2/5)</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">40 / (1/5)</gadget>
<output>200</output>

<gadget id="calculator">200 * (2/5)</gadget>
<output>80</output>

<result>80</result>