A factory produced a total of 120 refrigerators in the first 10 days of August, and an average of 12 refrigerators per day in the next period, so how many refrigerators were produced on average per day this month?
某工厂8月份前10天共生产冰箱120台，后一段时间平均每天生产12台冰箱，那么这个月平均每天生产多少台冰箱？
<gadget id="calculator">31 - 10</gadget>
<output>21</output>

<gadget id="calculator">21 * 12</gadget>
<output>252</output>

<gadget id="calculator">120 + 252</gadget>
<output>372</output>

<gadget id="calculator">372 / 31</gadget>
<output>12</output>

<result>12</result>