The construction site needs 2,600 truckloads of fine sand. 1,621 truckloads have already been delivered, and the rest are required to be shipped within 11 days. How many truckloads are needed on average per day?
建筑工地要用2600车细沙，已经运来1621车，剩下的要求在11天内运完，平均每天要运多少车？
<gadget id="calculator">2_600 - 1_621</gadget>
<output>979</output>

<gadget id="calculator">979 / 11</gadget>
<output>89</output>

<result>89</result>