Each basket of apples and white pears weighs 45 kilograms. The store transports 75 baskets of apples in the morning and 25 baskets of white pears in the afternoon. How many kilograms of apples and white pears are shipped in total on this day?
苹果和白梨每筐都是45千克，商店上午运进苹果75筐，下午运进白梨25筐，这一天共运进苹果和白梨多少千克？
<gadget id="calculator">75 + 25</gadget>
<output>100</output>

<gadget id="calculator">45 * 100</gadget>
<output>4_500</output>

<result>4_500</result>