There are 18 cartons of eggs in the supermarket. After selling 650 kilograms, there are 5 cartons left. How many kilograms are in each carton of eggs?
超市有18箱鸡蛋，卖出去650千克后，还剩5箱，每箱鸡蛋有多少千克？
<gadget id="calculator">18 - 5</gadget>
<output>13</output>

<gadget id="calculator">650 / 13</gadget>
<output>50</output>

<result>50</result>