Xiao Gang reads a story book, he reads (1/8) of the whole book on the first day, (5/8) of the whole book on the second day, and reads the whole book by a fraction more on the second day than on the first day ?
小刚看一本故事书，第一天看了全书的(1/8)，第二天看了全书的(5/8)，第二天比第一天多看了全书的几分之几？
<gadget id="calculator">5 / 8</gadget>
<output>5/8 = around 0.625</output>

<gadget id="calculator">1 / 8</gadget>
<output>1/8 = around 0.125</output>

<gadget id="calculator">(5/8) - (1/8)</gadget>
<output>1/2 = around 0.5</output>

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