The weight ratio of A and B bags of sugar is 4:1. Take 2.6 kg of sugar from A bag and put it into B bag. At this time, the weight ratio of A and B bags of sugar is 7:5. What is the total weight of the two bags of sugar? ?
甲、乙两袋糖的重量比是4：1，从甲袋中取出2.6千克糖放入乙袋，这时甲、乙两袋糖的重量比是7：5，两袋糖一共重多少千克？
<gadget id="calculator">4 + 1</gadget>
<output>5</output>

<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">7 + 5</gadget>
<output>12</output>

<gadget id="calculator">7 / 12</gadget>
<output>7/12 = around 0.583333</output>

<gadget id="calculator">(4/5) - (7/12)</gadget>
<output>13/60 = around 0.216667</output>

<gadget id="calculator">2.6 / (13/60)</gadget>
<output>12</output>

<result>12</result>