A car (1/2) travels 30 kilometers in an hour, how many kilometers per hour does it travel on average?
一辆汽车(1/2)小时行了30千米，平均每小时行多少千米．
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">30 / (1/2)</gadget>
<output>60</output>

<result>60</result>