Two engineering teams, A and B, rush to repair a road in a disaster area. They work simultaneously from both ends. Team A repairs 8.5 kilometers every day. Team B repairs 6.5 kilometers every day and completes the repair in 5 days. How many kilometers is this road?
甲、乙两个工程队抢修一条灾区公路，它们从两端同时施工，甲队每天修8.5千米．乙队每天修6.5千米，5天修完，这条公路长多少千米？
<gadget id="calculator">8.5 * 5</gadget>
<output>42.5</output>

<gadget id="calculator">6.5 * 5</gadget>
<output>32.5</output>

<gadget id="calculator">42.5 + 32.5</gadget>
<output>75</output>

<result>75</result>