Our Eighth Route Army cavalry chased the Japanese invaders at a speed of 22km per hour. When we arrived at a certain village, we learned that the Japanese invaders had fled 2 hours ago. It is known that the Japanese invaders fled at a speed of 12km per hour. The Eighth Route Army cavalry could catch up and flee in a few hours. enemy?
我八路军骑兵以每小时22km的速度追击日寇，当到达某村庄时，得知日寇已于2小时前逃跑，已知日寇逃跑的速度是每小时12km，八路军骑兵几小时可以追上逃敌？
<gadget id="calculator">12 * 2</gadget>
<output>24</output>

<gadget id="calculator">22 - 12</gadget>
<output>10</output>

<gadget id="calculator">24 / 10</gadget>
<output>12/5 = around 2.4</output>

<result>12/5 = around 2.4</result>