The students of Guangming Primary School have military training. During the march at night, the "First Company" walked 2,200 meters, and the "Second Company" walked 150 meters less than the "First Company".
光明小学的学生进行军训，在晚上的行军中，"一连"步行了2200米，"二连"比"一连"要少行150米，那么"一连"和"二连"共行军多少米．
<gadget id="calculator">2_200 - 150</gadget>
<output>2_050</output>

<gadget id="calculator">2_200 + 2_050</gadget>
<output>4_250</output>

<result>4_250</result>