Xiao Ming reads a book. On the first day, he reads (1/2) and 3 pages of the whole book. On the second day, he reads 2 pages less than the remaining (1/3). (5/8) has 2 more pages, and there are 16 unread pages. How many pages does this book have?
小明读一本书，第一天读了全书的(1/2)又3页，第二天读的页数比余下的(1/3)少2页，第三天读的页数比余下的(5/8)多2页，还有16页没读，这本书共有多少页？
<gadget id="calculator">16 + 2</gadget>
<output>18</output>

<gadget id="calculator">5 / 8</gadget>
<output>5/8 = around 0.625</output>

<gadget id="calculator">1 - (5/8)</gadget>
<output>3/8 = around 0.375</output>

<gadget id="calculator">18 / (3/8)</gadget>
<output>48</output>

<gadget id="calculator">48 + 2</gadget>
<output>50</output>

<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">1 - (1/3)</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">50 / (2/3)</gadget>
<output>75</output>

<gadget id="calculator">75 + 3</gadget>
<output>78</output>

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

<gadget id="calculator">78 / (1/2)</gadget>
<output>156</output>

<result>156</result>