Xiaoying read a storybook in 3 days, read the whole book (4/9) on the first day, read the whole book (3/9) on the second day, and what fraction of the whole book was read on the third day?
小英3天看完一本故事书，第一天看了全书的(4/9)，第二天看了全书的(3/9)，第三天看了全书的几分之几？
<gadget id="calculator">4 / 9</gadget>
<output>4/9 = around 0.444444</output>

<gadget id="calculator">3 / 9</gadget>
<output>1/3 = around 0.333333</output>

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

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