read (3/8) of this book on the first day, and (4/8) of this book on the second day. What percentage of this book did I read in total in the two days?
第一天看了这本书的(3/8)，第二天又看了这本书的(4/8)，两天一共看了这本书的几分之几？
<gadget id="calculator">3 / 8</gadget>
<output>3/8 = around 0.375</output>

<gadget id="calculator">4 / 8</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">(3/8) + (1/2)</gadget>
<output>7/8 = around 0.875</output>

<result>7/8 = around 0.875</result>