There is a barrel of oil, 40% of the barrel of oil is poured out for the first time, and the rest (2/3) is poured out for the second time, leaving 5 kilograms. How many kilograms of this barrel of oil are there?
有一桶油，第一次倒出这桶油的40%，第二次倒出剩下的(2/3)，还剩5千克，这桶油的原来有多少千克？
<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">1 - (2/3)</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">40 / 100</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">5 / (1/3) / (3/5)</gadget>
<output>25</output>

<result>25</result>