Xiao Ming has already read 86 pages of a science and technology book; the remaining 102 pages a day will take 6 days to finish. How many pages does this technical book have?
小明读一本科技书，已经读了86页；剩下的每天读102页，还要6天才可读完．问这本科技书一共有多少页？
<gadget id="calculator">102 * 6</gadget>
<output>612</output>

<gadget id="calculator">86 + 612</gadget>
<output>698</output>

<result>698</result>