A train has to pass through the 1800-meter-long bridge. It is known that it takes 112 seconds for the truck to leave the bridge from the front of the truck, and the time for the truck to be completely on the bridge is 80 seconds. How many meters is this truck?
一列火车要通过1800米长的大桥．已知从货车头上桥到车尾离开桥共用112秒，货车完全在桥上的时间为80秒，这列货车长多少米？
<gadget id="calculator">1_800 / 80</gadget>
<output>45/2 = around 22.5</output>

<gadget id="calculator">112 - 80</gadget>
<output>32</output>

<gadget id="calculator">(45/2) * 32</gadget>
<output>720</output>

<result>720</result>