(2/5) of a bag of brown sugar is 80 grams, how many grams is (1/4) of it?
一袋红糖的(2/5)是80克，它的(1/4)是多少克．
<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

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

<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">200 * (1/4)</gadget>
<output>50</output>

<result>50</result>