Xiao Ming reads a book of fairy tales. He reads (1/4) of the whole book on the first day and (1/4) of the whole book on the second day. How much of the book did he read in total in two days?
小明看一本童话书，第一天看了全书的(1/4)，第二天看了全书的(1/4)，两天一共看了这本书的多少．
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

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

<result>1/2 = around 0.5</result>