On a small road parallel to the railway, a group of pedestrians and a cyclist are traveling from east to west at the same time. The speed of the pedestrians is 1 m/s, and the speed of the autobots is 3 m/s. If there is a train coming from behind them, it takes 22 seconds to pass pedestrians and 26 seconds to pass cyclists, how many meters is the body length of this train?
在一条与铁路平行的小路上，有一行人与一骑车人同时由东向西行进，行人的速度为1米/秒，汽车人的速度为3米/秒．如果有一列火车从他们背后开过来，它通过行人用22秒，通过骑车人用26秒，求这列火车的车身长多少米？
<gadget id="calculator">3 * 26</gadget>
<output>78</output>

<gadget id="calculator">78 - 22</gadget>
<output>56</output>

<gadget id="calculator">26 - 22</gadget>
<output>4</output>

<gadget id="calculator">56 / 4</gadget>
<output>14</output>

<gadget id="calculator">14 - 1</gadget>
<output>13</output>

<gadget id="calculator">13 * 22</gadget>
<output>286</output>

<result>286</result>