Two teams work together to pave a road. Team A paves 6.2km every day, and team B paves 5.6km every day. The two teams jointly pave in 23 days. How many kilometers is this road?
两队合铺一条公路，甲队每天铺6.2km，乙队每天铺5.6km，两队合铺23天完成．这条公路长多少千米？
<gadget id="calculator">6.2 * 23</gadget>
<output>142.6</output>

<gadget id="calculator">5.6 * 23</gadget>
<output>128.8</output>

<gadget id="calculator">142.6 + 128.8</gadget>
<output>271.4</output>

<result>271.4</result>