When Zhang Li reads a book, she reads (1/6) of the whole book on the first day, and reads the rest (1/4) on the second day, and there are 15 more pages. At this time, there are 60 pages left. How many pages are there?
张丽看一本书，第一天看了全书的(1/6)，第二天看了余下的(1/4)又多15页，这时还剩60页没有看，这本书一共有多少页？
<gadget id="calculator">60 + 15</gadget>
<output>75</output>

<gadget id="calculator">1 / 6</gadget>
<output>1/6 = around 0.166667</output>

<gadget id="calculator">1 - (1/6)</gadget>
<output>5/6 = around 0.833333</output>

<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">(5/6) * (1/4)</gadget>
<output>5/24 = around 0.208333</output>

<gadget id="calculator">1 - (1/6) - (5/24)</gadget>
<output>5/8 = around 0.625</output>

<gadget id="calculator">75 / (5/8)</gadget>
<output>120</output>

<result>120</result>