Xiaofang rides a bicycle at 12 kilometers per hour, which is 4 kilometers less than a car (2/9) per hour. How many kilometers does a car travel per hour? (Solution by equation) w.
小芳骑自行车每小时行12千米，比一辆汽车每小时行的(2/9)少4千米．一辆汽车每小时行多少千米？(用方程解)w．
<gadget id="calculator">4 + 12</gadget>
<output>16</output>

<gadget id="calculator">2 / 9</gadget>
<output>2/9 = around 0.222222</output>

<gadget id="calculator">16 / (2/9)</gadget>
<output>72</output>

<result>72</result>