The store shipped 48 boxes of eggs, each weighing 25 kilograms, and the original eggs in the store were 840 kilograms. How many kilograms of eggs are there in the store?
商店运来48箱鸡蛋，每箱重25千克，商店原有鸡蛋840千克，商店共有鸡蛋多少千克？
<gadget id="calculator">48 * 25</gadget>
<output>1_200</output>

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

<result>2_040</result>