2. Original formula =108+0.53x60'-6512' 28 "

= 108 3 1′+0.8x 60″-65 12′28 "

= 108 3 1′48″-65 12′28″

=43 19′20″

3. Original formula =12060 ′ 24 ″-7036 ′

= 120 59′84″-70 36″

=50 59′48″

4. Original formula =127 92' 46 "-23 40'18"

= 104 52′28″

5. Original formula = (94 60 ′ 24 ″-2515 ′) x3.

= 69 45’24”x3

=207 135′72″

=209 16′ 12″

6. Original formula = [60-21-(1103/1800)]/2

=[39 -( 1 103/ 1800) ]/2

= 19.5 -( 1 103/3600)

≈ 19. 1936