When Xiaohong reads a book, the ratio of the number of pages she has read to the number of remaining pages is 2:3. If she reads another 56 pages, she just reads the complete book (3/4). How many pages does this book have?
小红看一本书，已看的页数与剩下的页数的比是2：3，如果再看56页，正好看完全书的(3/4)．这本书一共有多少页？
<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">2 + 3</gadget>
<output>5</output>

<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">(3/4) - (2/5)</gadget>
<output>7/20 = around 0.35</output>

<gadget id="calculator">56 / (7/20)</gadget>
<output>160</output>

<result>160</result>