The working width of a combine harvester is 2 meters, and it can advance 45 meters per minute. How many square meters of wheat can be harvested in half an hour?
一台联合收割机的作业宽度是2米，每分钟可以前进45米，半小时可以收割麦子多少方米？
<gadget id="calculator">45 * 30</gadget>
<output>1_350</output>

<gadget id="calculator">2 * 1_350</gadget>
<output>2_700</output>

<result>2_700</result>