a(1,1)=2;
a(1,2)=6;
a(1,3)=7;
a(2,1)=6;
a(2,2)=6;
a(2,3)=3;
a(3,1)=9;
a(3,2)=7;
a(3,3)=2;

b(1,1)=9;
b(1,2)=3;
b(1,3)=8;
b(2,1)=1;
b(2,2)=7;
b(2,3)=8;
b(3,1)=3;
b(3,2)=5;
b(3,3)=4;

a/b