36/60=0.6,24+0.6=24.6,24.6/60=0.41,30+0.41=30.41,30°24′36″=30.41°
30°24′36″=30°+60″×24+36″=30°+1476″/(3600″)=30°+1476/3600°=(30+1476/3600)°=(30+41/100)°=30.41°
24′=0.4°,36″=0.01°所以30°24′36″=36.41°
30°24′36″=30°24.6′=30.41°