3:15 = how much time.
3时15分=多少时．
<gadget id="calculator">15 / 60</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">(1/4) + 3</gadget>
<output>13/4 = around 3.25</output>

<result>13/4 = around 3.25</result>