I have read 35 pages of an extra-curricular reading, and there is still (2/7) left to read. How many pages are there in this extra-curricular reading?
一本课外读物我读了35页，还剩下(2/7)没有读，这本课外读物一共有多少页？
<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">35 / (5/7)</gadget>
<output>49</output>

<result>49</result>