Xiaofang rides a bicycle at 12 kilometers per hour, and Xiaofang travels 6 kilometers per hour on a bicycle (2/9) less than that on a car. How many kilometers does the car travel per hour? (Equation solution).
小芳骑自行车每小时12千米，小芳骑自行车每小时行的比汽车每小时行的(2/9)少6千米．汽车每小时行多少千米？(方程解)．
<gadget id="calculator">6 + 12</gadget>
<output>18</output>

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

<gadget id="calculator">18 / (2/9)</gadget>
<output>81</output>

<result>81</result>