Xiao Fei reads a book. He reads (1/3) of the whole book on the first day and the rest (3/4) on the second day. What fraction of the whole book did he read in two days?
小飞读一本书，第一天读了全书的(1/3)，第二天读了余下的(3/4)，两天共读了全书的几分之几？
<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">3 / 4</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">(2/3) * (3/4)</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">(1/3) + (1/2)</gadget>
<output>5/6 = around 0.833333</output>

<result>5/6 = around 0.833333</result>