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[[Handwritten calculations written horizontally right to left in the upper right hand corner of the page.]]

          11 - 30
          11 - 15
          ________
               15 [[10 encircled]]
               15 [[9 encircled]]
               15 [[10 encircled]]
               15 [[8 encircled]]
               15 [[5 encircled]]
               15 [[5 encircled]]
          ________
               6 [[divided by symbol]] 47
               ________
           90   (7.83)
           60  ________
          ____
say   8) 5400(
        ______
          675
           33
          _____
         2025
        2025
       ________
   6086) 22275 (3.66 miles
         18258
        _______
          40170
          36526
        _______
          36440

[[To the right of the calculation (i.e., toward the bottom of the page) there is black ink bleed through (ink sketch of mountains) from the previous page 15.]]
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