How much is (2/5) of 50 equal to 80?
50的(2/5)等于80的多少
<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">(2/5) / 80</gadget>
<output>1/200 = around 0.005</output>

<gadget id="calculator">50 * (1/200)</gadget>
<output>1/4 = around 0.25</output>

<result>1/4 = around 0.25</result>