I am suppose to find the right and left cosets of <(1 2 3),2> in S_3 (+) Z_3

(+) is the External Direct Product sign

I know that 0 1 2 make up Z_3
and I think S_3 is 1 2 3

Then how do I start to solve to find the left and right cosets of <(1 2 3),2> in S_3 (+) Z_3

Please help