The engineering team repaired a road, 5,300 meters in the first 15 days of March, and 250 meters per day for the rest of March. How many meters per day on average this month?
工程队修一条公路，三月份前15天修了5300米，三月剩下的时间每天修了250米，这个月平均每天修多少米？
<gadget id="calculator">31 - 15</gadget>
<output>16</output>

<gadget id="calculator">250 * 16</gadget>
<output>4_000</output>

<gadget id="calculator">5_300 + 4_000</gadget>
<output>9_300</output>

<gadget id="calculator">9_300 / 31</gadget>
<output>300</output>

<result>300</result>