There are 240 tons of grain in the grain depot, if 1/5 of the total is removed, how many tons are left?
粮库有240吨粮食，运走总数的(1/5)，还剩下多少吨？
<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 - (1/5)</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">240 * (4/5)</gadget>
<output>192</output>

<result>192</result>