The body of the slow car is 125 meters above, and its speed is 17 meters per second. The body of the express car is 140 meters long and its speed is 22 meters per second.
慢车车身上125米，速度是每秒17米，快车车身长140米速度是每秒22米，慢车在前面行驶，快车从后面最上到完全超出要用多少秒？
<gadget id="calculator">125 + 140</gadget>
<output>265</output>

<gadget id="calculator">22 - 17</gadget>
<output>5</output>

<gadget id="calculator">265 / 5</gadget>
<output>53</output>

<result>53</result>