Two engineering teams, A and B, jointly build a road with a length of 136 km. The two teams started construction at the same time and completed it in 17 days. Team A repairs 3.9km every day, how many kilometers does Team B repair every day?
甲、乙两个工程队共同修筑一条长136km的公路，两队同时动工，17天完成．甲队每天修3.9km，乙队每天修多少千米？
<gadget id="calculator">136 / 17</gadget>
<output>8</output>

<gadget id="calculator">8 - 3.9</gadget>
<output>4.1</output>

<result>4.1</result>