Teacher Zhang borrowed a book, read 30% of the book on the first day, and read 14 pages less than the book (2/5) on the second day, and read a total of 70 pages in two days. How many pages does this book have?
张老师借来一本书，第一天看了全书的30%，第二天看的比全书的(2/5)少14页，两天共看了70页，这本书一共多少页？
<gadget id="calculator">70 + 14</gadget>
<output>84</output>

<gadget id="calculator">30 / 100</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">(3/10) + (2/5)</gadget>
<output>7/10 = around 0.7</output>

<gadget id="calculator">84 / (7/10)</gadget>
<output>120</output>

<result>120</result>