There are two bags of flour, bag A is 1.4 times the weight of bag B, if 10 kg is taken out of bag A, and 2 kg is taken out of bag B, the weight of the two bags of flour is the same. How many kilograms is the original bag of flour?
有两袋面粉，甲袋是乙袋的1.4倍，如果甲袋取出10千克，乙袋取出2千克，两袋面粉同样重．原来乙袋面粉多少千克．
<gadget id="calculator">10 - 2</gadget>
<output>8</output>

<gadget id="calculator">1.4 - 1</gadget>
<output>0.4</output>

<gadget id="calculator">8 / 0.4</gadget>
<output>20</output>

<result>20</result>