An oil barrel is filled with half a barrel of oil, and after pouring out (3/5) of the oil, there is still 8 kilograms of oil left. How many kilograms of oil can this oil barrel hold?
一个油桶装了半桶油，倒出油的(3/5)后，还剩8千克油，这个油桶能装油多少千克？
<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">1 - (3/5)</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">8 / (2/5)</gadget>
<output>20</output>

<gadget id="calculator">20 * 2</gadget>
<output>40</output>

<result>40</result>