A garment factory produced a set of adult garments and b sets of children's garments per month on average last year. Use the formula to express the total number of sets of adult and children's clothing produced by this garment factory last year. When a=480 and b=150, how many sets of clothes did this garment factory produce last year?
一个服装厂去年平均每月生产成人服装a套，儿童服装b套．用式子表示这个服装厂去年生产成人与儿童服装的总套数．当a=480，b=150时，这个服装厂去年共生产服装多少套？
<gadget id="calculator">480 * 12</gadget>
<output>5_760</output>

<gadget id="calculator">150 * 12</gadget>
<output>1_800</output>

<gadget id="calculator">5_760 + 1_800</gadget>
<output>7_560</output>

<result>7_560</result>