112 grade = 112 × 60 minute = 6720 minute
112 grade 30 min = 6720 + 30 minute = 6750 minute
6750 = 6750 : 60 grade = 112,5 grade
Sau, mai usor, observam ca 30 de minute = jumatate de grad (intrucat un grad are 60 de minute), deci avem 112,5 grade.
