15+5+5=25м
99/2=(9/2=4 9-8=1, 19/2=9 19-18=1, 10/2=5)=49,5=49 1/2
47/7=(47/7=6 47-42=5)=6 5/7
69/22=(69/22=3 69-66=3)=3 3/22
15+5+5=25м
99/2=(9/2=4 9-8=1, 19/2=9 19-18=1, 10/2=5)=49,5=49 1/2
47/7=(47/7=6 47-42=5)=6 5/7
69/22=(69/22=3 69-66=3)=3 3/22