The engineering team repaired a 4,000-meter-long road, and after 3 days, 40% of the road remained unrepaired. How many meters is the average road repaired per day?
工程队修一条长4000米的路，3天后还剩下40%没有修，平均每天修路多少米？
<gadget id="calculator">40 / 100</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">1 - (2/5)</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">(3/5) / 3</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">4_000 * (1/5)</gadget>
<output>800</output>

<result>800</result>