To build a 1 km tunnel, 880 meters have been completed, and the remaining plan will be completed in 15 days. How many meters will be repaired on average per day?
修建一条1千米的隧道，已经完成880米，剩下的计划15天完成，平均每天要修多少米？
<gadget id="calculator">1 * 1_000</gadget>
<output>1_000</output>

<gadget id="calculator">1_000 - 880</gadget>
<output>120</output>

<gadget id="calculator">120 / 15</gadget>
<output>8</output>

<result>8</result>