A store brings in 12 boxes of apples and 12 boxes of peaches. Each box of apples weighs 45 kilograms, and each box of peaches weighs 55 kilograms. How many kilograms do these fruits weigh in total?
某店运进苹果和桃子各12箱，苹果每箱重45千克，桃子每箱重55千克，这批水果一共重多少千克？
<gadget id="calculator">45 + 55</gadget>
<output>100</output>

<gadget id="calculator">100 * 12</gadget>
<output>1_200</output>

<result>1_200</result>