sc7086

The answer is 91
( Z5 l8 D; J: G# T- Ftvb now,tvbnow,bttvb1 row 3x4+1x3=15
& @# J( q' @0 p* _3 O2 row 4x5+2x4=285.39.217.77/ j. N1 `' }! K9 ~/ G; L0 `
3 row 5x6+3x5=45
  n: W! X4 z( ~9 p- Y6 x  O5.39.217.774 row 6x7+4x6=66
  t; L, x" h" P: A0 _$ C7 Htvb now,tvbnow,bttvb5 row 7x8+5x7=91