A barrel of oil, after taking out (2/5) for the first time, pour 6 kg of oil into the barrel, take out 24 kg for the second time, and the ratio of the weight of the second time to the remaining oil is 4:3. How much does a full barrel of oil weigh in kilograms?
一桶油，第一次取出(2/5)后，又往桶里灌油6千克，第二次取出24千克，第二次取出的与剩下的油重量之比为4：3．原来全桶油重多少千克．
<gadget id="calculator">24 / 4</gadget>
<output>6</output>

<gadget id="calculator">4 + 3</gadget>
<output>7</output>

<gadget id="calculator">6 * 7</gadget>
<output>42</output>

<gadget id="calculator">42 - 6</gadget>
<output>36</output>

<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">1 - (2/5)</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">36 / (3/5)</gadget>
<output>60</output>

<result>60</result>