The cafeteria brought 60 tons of coal, and after using part of it, the remaining (2/5) of the total amount was used. How many tons were used?
食堂运来60吨煤，用了一部分后，还剩总数的(2/5)，用了多少吨？
<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">60 * (3/5)</gadget>
<output>36</output>

<result>36</result>