S = Table([[2 4] [6 0]], i, j)
A = Table([[1 2] [3 2]], i, k)
B = Table([[9 8] [6 5]], k, j)
AB = MapJoin(mul, A, B)
C = Aggregate(add, 0, AB, k)
RES = MapJoin(mul, C, S)
return RES
