A barrel of oil is 100 kg, and B barrel of oil is 70 kg. After adjustment, (3/4) of oil in barrel A is (2/3) of oil in barrel B. How to adjust and write down the calculation process.
甲桶油100千克，乙桶油70千克，经过调整，甲桶油的(3/4)是乙桶油的(2/3)，是怎么样调整的，写出计算过程．
<gadget id="calculator">100 + 70</gadget>
<output>170</output>

<gadget id="calculator">8 + 9</gadget>
<output>17</output>

<gadget id="calculator">8 / 17</gadget>
<output>8/17 = around 0.470588</output>

<gadget id="calculator">170 * (8/17)</gadget>
<output>80</output>

<gadget id="calculator">100 - 80</gadget>
<output>20</output>

<result>20</result>