*6 6 2 8 4 5 +5=1 7 3 9 0
*5 5 0 +4=9 4
*4 4 8 2 6 0 +3=7 1 5 9 3
*3 3 6 9 2 5 8 1 4 7 +2=5 ..9
=> x9 => 59