A road can be completed in 16 days with the cooperation of A and B. If A builds an extra 200m per day and B builds an extra 150m per day, it can be completed in 12 days. Find the length of the road?
一条路，甲乙合作，16天可完成，若甲每天多修200m，乙每天多修150m，可12天完成，求路的长度？
<gadget id="calculator">200 + 150</gadget>
<output>350</output>

<gadget id="calculator">1 / 12</gadget>
<output>1/12 = around 0.083333</output>

<gadget id="calculator">1 / 16</gadget>
<output>1/16 = around 0.0625</output>

<gadget id="calculator">(1/12) - (1/16)</gadget>
<output>1/48 = around 0.020833</output>

<gadget id="calculator">350 / (1/48)</gadget>
<output>16_800</output>

<result>16_800</result>