A road is 2400 meters long. Two construction teams, A and B, pave asphalt from both ends of the road to the middle at the same time. The construction speed of team A is twice that of team B. After 4 days, the road is completely paved. How many meters does team B lay every day?
一条公路长2400米，甲乙两支施工队同时从公路的两端向中间铺柏油，甲队的施工速度是乙队的2倍，4天后这条公路全部铺完．乙队每天铺多少米？
<gadget id="calculator">1 + 2</gadget>
<output>3</output>

<gadget id="calculator">2_400 / 4 / 3</gadget>
<output>200</output>

<result>200</result>