The store originally had 840 kilograms of eggs. Today, 48 cartons of eggs weighed 25 kilograms. How many kilograms are there in total?
商店原有鸡蛋840千克，今天又运来48箱鸡蛋，每箱重25千克，现在一共有鸡蛋多少千克？
<gadget id="calculator">25 * 48</gadget>
<output>1_200</output>

<gadget id="calculator">1_200 + 840</gadget>
<output>2_040</output>

<result>2_040</result>