A toy factory needs to make 1,285 toys, 415 of which have already been made, and the rest needs to be finished within 15 days. How many pieces are produced on average per day?
一个玩具厂要做1285件玩具，已经做了415件，剩下的要在15天内做完，平均每天要做多少件？
<gadget id="calculator">1_285 - 415</gadget>
<output>870</output>

<gadget id="calculator">870 / 15</gadget>
<output>58</output>

<result>58</result>