64:6=10, rest 4
65:6=10,rest 5
66:6=11
67:6=11,rest 1
68:6=11,rest 2
69:6=11, rest 3
70:6=11,rest 4
71:6=11,rest 5
72:6=12
73:6=12,rest 1
74:6=12,rest 2
75:6=12,rest 3
76:6==12,rest 4
77:6=12,rest 5
78:6=13
4+5+1+2+3+4+5+1+2+3+4+5=39(suma resturilor)
