A car travels (7/6) km per minute, how much does it travel in half an hour.
一辆汽车每分钟行(7/6)km，半小时行多少．
<gadget id="calculator">7 / 6</gadget>
<output>7/6 = around 1.166667</output>

<gadget id="calculator">(7/6) * 30</gadget>
<output>35</output>

<result>35</result>