There are two barrels of oil, A and B. After pouring (1/3) from barrel A to barrel B, pour (1/5) from barrel B to barrel A. At this time, the oil in both barrels is 48 kg. How many kilograms of oil are there in barrel A?
有甲、乙两桶油，用甲桶中倒出(1/3)给乙桶后，又从乙桶中倒出(1/5)给甲桶，这时两桶油都是48千克，原来甲桶中有多少千克油？
<gadget id="calculator">76.8 - 48</gadget>
<output>28.8</output>

<gadget id="calculator">8 / 15</gadget>
<output>8/15 = around 0.533333</output>

<gadget id="calculator">28.8 / (8/15)</gadget>
<output>54</output>

<result>54</result>