In the spring reading activity, Xiao Ming read a book, and he read (3/8) of the whole book on the first day, and read (2/3) of the whole book on the second day. After finishing the rest of the third day, what percentage of the book did he read on the third day?
在春润读书活动中，小明读一本书，第一天读了全书的(3/8)，第二天读的相当于第一天的(2/3)．剩下的第三天读完，他第三天读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">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">(3/8) * (2/3)</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1 - (3/8) - (1/4)</gadget>
<output>3/8 = around 0.375</output>

<result>3/8 = around 0.375</result>