When Wang Bin read a book, he read the whole book on the first day (2/9), and read more of the book on the second day than on the first day (4/27). How much of the whole book did you read in two days?
王彬看一本书，第一天看了全书的(2/9)，第二天比第一天多看了全书的(4/27)．两天一共看了全书的几分之几？
<gadget id="calculator">2 / 9</gadget>
<output>2/9 = around 0.222222</output>

<gadget id="calculator">4 / 27</gadget>
<output>4/27 = around 0.148148</output>

<gadget id="calculator">(2/9) + (4/27) + (2/9)</gadget>
<output>16/27 = around 0.592593</output>

<result>16/27 = around 0.592593</result>