1 hour and 30 minutes = how many hours.
1小时30分=多少小时．
<gadget id="calculator">30 / 60</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">1 + (1/2)</gadget>
<output>3/2 = around 1.5</output>

<result>3/2 = around 1.5</result>