bucket of peanut oil is 6 kilograms, (1/3) of the oil is poured out for the first time, and (1/5) kilograms are poured out for the second time, how many kilograms are left in the bucket.
一桶花生油6千克，第一次倒出油的(1/3)，第二次倒出(1/5)千克，桶内还剩多少千克．
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">6 * (1/3)</gadget>
<output>2</output>

<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">6 - 2 - (1/5)</gadget>
<output>19/5 = around 3.8</output>

<result>19/5 = around 3.8</result>