A tunnel is 396 meters long. Teams A and B are working from both ends of the tunnel to the middle at the same time. The speed of team A is 1.2 times that of team B, and it will be completed in 50 days. How many meters does team B repair on average every day?
一条隧道长396米，甲乙两队同时从隧道的两端往中间施工．甲队的速度是乙队的1.2倍，50天后完工．乙队平均每天修多少米？
<gadget id="calculator">6 + 5</gadget>
<output>11</output>

<gadget id="calculator">5 / 11</gadget>
<output>5/11 = around 0.454545</output>

<gadget id="calculator">(5/11) / 50</gadget>
<output>1/110 = around 0.009091</output>

<gadget id="calculator">396 * (1/110)</gadget>
<output>18/5 = around 3.6</output>

<result>18/5 = around 3.6</result>