A factory wants to produce a batch of parts, and 210 boxes were produced in the first 7 days. According to this calculation, the remaining ones will be completed in just 5 days. How many boxes are there in this batch of parts?
某厂要生产一批零件，前7天生产了210箱，照这样计算，剩下的刚好5天完成．这批零件共有多少箱？
<gadget id="calculator">210 / 7</gadget>
<output>30</output>

<gadget id="calculator">7 + 5</gadget>
<output>12</output>

<gadget id="calculator">30 * 12</gadget>
<output>360</output>

<result>360</result>