s = 19107012
L = s Mod 10
T = s Mod 100
k = s Mod 10000

sum1 = T + L
sum2 = k + s

MsgBox sum1
MsgBox sum2

difference1 = T - L
difference2 = k - s

MsgBox difference1
MsgBox difference2

dotproduct = T * L + k * s

MsgBox dotproduct

crossproduct = T * s - k * L
MsgBox crossproduct