It is known that the express train is 182 meters long and travels 20 meters per second, the slow train is 218 meters long and travels 18 meters per second, and the two cars are traveling in the same direction, so how many seconds will it take for the express train to catch up to the slow train?
已知快车长182米，每秒行20米，慢车长218米，每秒行18米，两车同向而行，那么快车赶上到超过慢车的时间是多少秒？
<gadget id="calculator">182 + 218</gadget>
<output>400</output>

<gadget id="calculator">20 - 18</gadget>
<output>2</output>

<gadget id="calculator">400 / 2</gadget>
<output>200</output>

<result>200</result>