The bus departs from A to B, and it is expected to arrive in 8 hours. After driving for 2 hours, it starts to rain, and the bus slows down. The ratio of the previous speed is 2:3. The bus actually takes a few hours to arrive.
客车从甲地出发去乙地，预计8小时后到达，行驶2小时后，天开始下雨，客车减速行驶，与之前的速度比是2：3．客车实际一共需要几小时到达．
<gadget id="calculator">8 - 2</gadget>
<output>6</output>

<gadget id="calculator">3 * 6</gadget>
<output>18</output>

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

<gadget id="calculator">9 + 2</gadget>
<output>11</output>

<result>11</result>