Xiaogang reads a book. He reads 25% of the whole book on the first day, and the ratio of the number of pages he reads on the second day to the first day is 6:5. /8) Didn't read it, how many pages are there in total?
小刚看一本书，第一天看了全书的25%，第二天所看的页数与第一天的比是6：5，第三天看了78页，还余下全书的(1/8)没看，全书一共有多少页？
<gadget id="calculator">25 / 100</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">6 / 5</gadget>
<output>6/5 = around 1.2</output>

<gadget id="calculator">(1/4) * (6/5)</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">1 / 8</gadget>
<output>1/8 = around 0.125</output>

<gadget id="calculator">1 - (1/4) - (3/10) - (1/8)</gadget>
<output>13/40 = around 0.325</output>

<gadget id="calculator">78 / (13/40)</gadget>
<output>240</output>

<result>240</result>