Two bags of sugar, A and B, are equal in weight after pouring 2.8 kg from bag A to bag B. It is known that bag A originally had 20 kilograms of white sugar, and how many kilograms of white sugar was originally in bag B?
甲、乙两袋白糖，从甲袋倒给乙袋2.8千克后两袋白糖的重量相等．已知甲袋原有20白糖千克，乙袋原有白糖几千克？
<gadget id="calculator">20 - 2.8</gadget>
<output>17.2</output>

<gadget id="calculator">17.2 * 2</gadget>
<output>34.4</output>

<gadget id="calculator">34.4 - 20</gadget>
<output>14.4</output>

<result>14.4</result>