2223.sagews

a = matrix(QQ,[[1,12],[12,1]])
b = matrix(QQ,[[3,5],[5,3]])

a*b

[63 41] [41 63]

c = matrix(QQ,[[1,2,3],[2,4,-5],[3,-5,6]])
d = matrix(QQ,[[4,5,5],[5,3,1],[5,1,9]])
c*d

[ 29 14 34] [ 3 17 -31] [ 17 6 64]