a · (b + c + 3) = ab + JXUwMDM5JXUwMDAy + JXUwMDZiJXUwMDUy
3 · (x + y) = JXUwMDZiJXUwMDRi + JXUwMDZiJXUwMDRh
a · (a + b) = a2 + JXUwMDM5JXUwMDAz
ab · (a + b) = aba + JXUwMDM5JXUwMDAzJXUwMDAw = a2b + JXUwMDM5JXUwMDAz 2