Two teams in a garment factory produce jackets and trousers of the same specification. Team A spends 18 days producing coats and trousers in 12 days per month, producing 600 sets of coats and trousers per month. Team B spends 15 days producing coats per month. , 15 days to produce trousers, and 600 sets of tops and trousers per month. If the two groups are combined, what is the maximum number of sets of tops and pants that can be produced per month?
某制衣厂两个小组生产同一规格的上衣和裤子，甲组每月用18天时间生产上衣、12天生产裤子，每月生产600套上衣和裤子；乙组每月用15天时间生产上衣，15天时间生产裤子，每月也生产600套上衣和裤子．如果两组合并，每月最多可生产多少套上衣和裤子？
<gadget id="calculator">30 / 15</gadget>
<output>2</output>

<gadget id="calculator">600 * 2</gadget>
<output>1_200</output>

<gadget id="calculator">600 / 30</gadget>
<output>20</output>

<gadget id="calculator">20 * 6</gadget>
<output>120</output>

<gadget id="calculator">1_200 + 120</gadget>
<output>1_320</output>

<result>1_320</result>