What is three times (10/13)?
(10/13)的3倍是多少．
<gadget id="calculator">10 / 13</gadget>
<output>10/13 = around 0.769231</output>

<gadget id="calculator">(10/13) * 3</gadget>
<output>30/13 = around 2.307692</output>

<result>30/13 = around 2.307692</result>