The engineering team had to dig a 463-meter-long tunnel, digging 7 meters a day for the first 25 days. The rest should be dug within 32 days, how many meters per day on average?
工程队要挖一条长463米的隧道，前25天每天挖7米．剩下的要在32天内挖完，平均每天挖多少米？
<gadget id="calculator">25 * 7</gadget>
<output>175</output>

<gadget id="calculator">463 - 175</gadget>
<output>288</output>

<gadget id="calculator">288 / 32</gadget>
<output>9</output>

<result>9</result>