On a road parallel to the railway, a pedestrian and a bicycle move forward at the same time. The pedestrian walks 1 meter per second, and the cyclist walks 3 meters per second. On the railway, there is a train behind them. It took the train 22 seconds to pass pedestrians and 26 seconds to pass cyclists. How long is this train in meters?
在与铁路平行的公路上，一个步行的人和一个自行车的人同时向前进，步行人每秒走1米，骑车人每秒走3米，在铁路上，从这两人后面有列火车开来，火车通过行人用了22秒，通过骑车人用了26秒．这列火车全长多少米？
<gadget id="calculator">3 - 1</gadget>
<output>2</output>

<gadget id="calculator">1 / 22</gadget>
<output>1/22 = around 0.045455</output>

<gadget id="calculator">1 / 26</gadget>
<output>1/26 = around 0.038462</output>

<gadget id="calculator">(1/22) - (1/26)</gadget>
<output>1/143 = around 0.006993</output>

<gadget id="calculator">2 / (1/143)</gadget>
<output>286</output>

<result>286</result>