A project can be completed by team A alone in 30 days, and by team B in 20 days alone. Now the two teams are working at the same time, and the work efficiency has increased by 20%. When the project was completed (1/4), it suddenly encountered groundwater, which affected the construction progress and reduced the excavation by 40 cubic meters per day. As a result, it took 11 days to complete the project. How many cubic meters of soil will be excavated for the whole project?
一项工程，如果甲队单独做30天可以完成，乙队单独做20天可以完成．现在两队同时施工，工作效率提高20%，当工程完成(1/4)时，突然遇到地下水，影响施工进度，使得每天少挖了40立方米，结果用了11天完成工程．整个工程要挖土多少立方米？
<gadget id="calculator">1 / 30</gadget>
<output>1/30 = around 0.033333</output>

<gadget id="calculator">1 / 20</gadget>
<output>1/20 = around 0.05</output>

<gadget id="calculator">(1/30) + (1/20)</gadget>
<output>1/12 = around 0.083333</output>

<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 + (1/5)</gadget>
<output>6/5 = around 1.2</output>

<gadget id="calculator">(1/12) * (6/5)</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">(1/4) / (1/10)</gadget>
<output>5/2 = around 2.5</output>

<gadget id="calculator">11 - (5/2)</gadget>
<output>17/2 = around 8.5</output>

<gadget id="calculator">(3/4) / (17/2)</gadget>
<output>3/34 = around 0.088235</output>

<gadget id="calculator">(1/10) - (3/34)</gadget>
<output>1/85 = around 0.011765</output>

<gadget id="calculator">40 / (1/85)</gadget>
<output>3_400</output>

<result>3_400</result>