A road construction team originally planned to complete a road in 7 days, but completed 30% of the whole process in 3 days. At this time, the unrepaired area was 280 meters more than the one that had been repaired. How many meters should be repaired on average per day in order to complete the task according to the original schedule? ?
一条修路队原定用7天修完一条路，3天修了全程的30%，这时没修的比已经修的多280米，以后平均每天应修多少米，才能按原定时间完成任务？
<gadget id="calculator">30 / 100</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">1 - (3/10) - (3/10)</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">280 / (2/5)</gadget>
<output>700</output>

<gadget id="calculator">1 - (3/10)</gadget>
<output>7/10 = around 0.7</output>

<gadget id="calculator">(7/10) / 4</gadget>
<output>7/40 = around 0.175</output>

<gadget id="calculator">700 * (7/40)</gadget>
<output>245/2 = around 122.5</output>

<result>245/2 = around 122.5</result>