The lid of the container containing the alcohol solution was accidentally opened. The alcohol evaporated (1/3) on the first day, and the rest (2/3) evaporated on the second day. At the end of the second day, the remaining in the container Alcohol accounted for the original amount
存有酒精溶液的容器的盖子不小心打开了，第一天酒精蒸发了(1/3)，第二天蒸发了剩下的(2/3)，第二天结束时，容器内剩下的酒精占原来的多少
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">1 - (1/3)</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">(2/3) * (2/3)</gadget>
<output>4/9 = around 0.444444</output>

<gadget id="calculator">1 - (1/3) - (4/9)</gadget>
<output>2/9 = around 0.222222</output>

<result>2/9 = around 0.222222</result>