There are two buckets of honey, the mass of the first bucket is 2.5 times that of the second bucket, if 3.6 kg is taken out from the first bucket and poured into the second bucket, the two buckets of honey will have the same weight. How many kilograms of the original honey in the second bucket?
有两桶蜂蜜，第一桶质量是第二桶的2.5倍，如果从第一桶拿出3.6千克倒入第二桶，两桶蜂蜜一样重．第二桶原有蜂蜜多少千克？
<gadget id="calculator">3.6 * 2</gadget>
<output>7.2</output>

<gadget id="calculator">2.5 - 1</gadget>
<output>1.5</output>

<gadget id="calculator">7.2 / 1.5</gadget>
<output>4.8</output>

<result>4.8</result>