ED = 10° x
60 x cos53° = 361.2nm = 669.54km = 66,954,000cm
Scale = CD/ED = CD/66,954,000cm = 1/1,234,000
CD = 66,954,000cm/1,234,000 = 54.2cm but 53°N is between the standard parallels
(36°N & 60°N) so scale will be less than 1/1,234,000 (scale contracts between
the standard parallels) and the chart distance will be less than 54.2cm.