Xiaohua reads a book. On the first day, he read the whole book (1/8) and there are 21 more pages. On the second day, he read the whole book (1/6) 6 pages less, and there are 172 pages left. This story book How many pages are there?
小华看一本书，第一天看了全书的(1/8)还多21页，第二天看了全书的(1/6)少6页，还剩下172页，这本故事书一共有多少页？
<gadget id="calculator">172 - 6</gadget>
<output>166</output>

<gadget id="calculator">21 + 166</gadget>
<output>187</output>

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

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

<gadget id="calculator">1 - (1/8) - (1/6)</gadget>
<output>17/24 = around 0.708333</output>

<gadget id="calculator">187 / (17/24)</gadget>
<output>264</output>

<result>264</result>