Wang Liang reads a book and has read 60 pages. The number of pages he has read is 3/4 of the number of pages he has not read. How many pages does this book have?
王亮读一本书，已经读了60页，已读的页数是未读页数的(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">60 / (3/4)</gadget>
<output>80</output>

<gadget id="calculator">80 + 60</gadget>
<output>140</output>

<result>140</result>