Xiaohong reads a story book, read the whole book (3/8) on the first day, and read the whole book (1/8) on the second and third day respectively. What fraction of the book did she read in three days?
小红看一本故事书，第一天看了全书的(3/8)，第二、三天各看了全书的(1/8)．她三天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">1 / 8</gadget>
<output>1/8 = around 0.125</output>

<gadget id="calculator">(3/8) + (1/8) + (1/8)</gadget>
<output>5/8 = around 0.625</output>

<result>5/8 = around 0.625</result>