The toy factory planned to produce 2100 panda toys in 15 days, and 120 per day in the first 5 days. In order to be able to give gifts to the children in the welfare home in time for Children's Day, the rest had to be completed 4 days in advance. How many are produced on average per day?
玩具厂打算15天生产2100个熊猫玩具，前5天每天生产120个，为了能赶在儿童节将礼物送给福利院的小朋友，余下的要提前4天完成．平均每天生产多少个？
<gadget id="calculator">120 * 5</gadget>
<output>600</output>

<gadget id="calculator">2_100 - 600</gadget>
<output>1_500</output>

<gadget id="calculator">15 - 5 - 4</gadget>
<output>6</output>

<gadget id="calculator">1_500 / 6</gadget>
<output>250</output>

<result>250</result>