Last year, a certain refrigerator factory produced an average of 900 refrigerators per month. In the first 9 months of this year, the output was 72 more than last year. In the first 9 months of this year, how many more refrigerators were produced each month than last year?
某冰箱厂去年平均每月生产冰箱900台，今年前9个月的产量比去年全年的产量还多72台，今年前9个月，平均每月比去年多生产冰箱多少台？
<gadget id="calculator">900 * 12</gadget>
<output>10_800</output>

<gadget id="calculator">10_800 + 72</gadget>
<output>10_872</output>

<gadget id="calculator">10_872 / 9</gadget>
<output>1_208</output>

<gadget id="calculator">1_208 - 900</gadget>
<output>308</output>

<result>308</result>