Xiaoqiang spent two days reading a story book. He read the whole book (2/7) on the first day and 75 pages on the second day. How many pages is this book?
小强用两天时间看完一本故事书，他第一天看了全书的(2/7)，第二天看了75页．这本书共多少页？
<gadget id="calculator">2 / 7</gadget>
<output>2/7 = around 0.285714</output>

<gadget id="calculator">1 - (2/7)</gadget>
<output>5/7 = around 0.714286</output>

<gadget id="calculator">75 / (5/7)</gadget>
<output>105</output>

<result>105</result>