A basket of eggs weighs 150 kg in total. After half of the eggs are sold, the total weight of the basket is 80 kg. How many kilograms does this basket of eggs weigh?
一筐鸡蛋连筐共重150千克，卖了一半鸡蛋后，连筐共重80千克．这筐鸡蛋重多少千克？
<gadget id="calculator">150 - 80</gadget>
<output>70</output>

<gadget id="calculator">70 * 2</gadget>
<output>140</output>

<result>140</result>