The food factory plans to produce 100 boxes of biscuits per day, and the order can be completed on schedule. The actual production is 120 boxes per day, and the task is completed 8 days ahead of schedule. How many boxes of this batch of biscuits are there?
食品厂计划每天生产饼干100箱，可按期完成订单任务，实际每天生产120箱，结果提前8天完成任务，这批饼干有多少箱？
<gadget id="calculator">100 * 8</gadget>
<output>800</output>

<gadget id="calculator">120 - 100</gadget>
<output>20</output>

<gadget id="calculator">800 / 20</gadget>
<output>40</output>

<gadget id="calculator">120 * 40</gadget>
<output>4_800</output>

<result>4_800</result>