Xiaohua reads a copy of "Underwater World". She reads 75 pages on the first day and 93 pages on the second day, leaving (3/7) unread. How many pages does this book have?
小华看一本《海底世界》，第一天看了75页，第二天看了93页，还剩(3/7)没看．这本书有多少页？
<gadget id="calculator">75 + 93</gadget>
<output>168</output>

<gadget id="calculator">3 / 7</gadget>
<output>3/7 = around 0.428571</output>

<gadget id="calculator">1 - (3/7)</gadget>
<output>4/7 = around 0.571429</output>

<gadget id="calculator">168 / (4/7)</gadget>
<output>294</output>

<result>294</result>