What is (4/5) of (3/5) hours?
(3/5)小时的(4/5)是多少．
<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">(3/5) * (4/5)</gadget>
<output>12/25 = around 0.48</output>

<result>12/25 = around 0.48</result>