A chicken farm collects eggs, packs 16 kg into a box, packs 18 boxes, and leaves 140 kg unpacked. How many kilograms are these eggs in total?
某鸡场收鸡蛋，16千克装一箱，装了18箱，还剩140千克没装．这批鸡蛋一共多少千克？
<gadget id="calculator">16 * 18</gadget>
<output>288</output>

<gadget id="calculator">288 + 140</gadget>
<output>428</output>

<result>428</result>