A typist types a manuscript, 40 pages are typed on the first day, 45 pages are typed on the second day, and there are still (2/7) untyped. How many pages are there in this manuscript?
一个打字员打一份稿件，第一天打40页，第二天打45页，还剩(2/7)没有打，这份稿共有多少页？
<gadget id="calculator">40 + 45</gadget>
<output>85</output>

<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">85 / (5/7)</gadget>
<output>119</output>

<result>119</result>