I have a multiset $\left\{ {2,3,3,3,4,4,5,5,6,7} \right\}$. How many distinct multiplications of three numbers chosen from the multiset?
e.g. 2×3×3; 2×3×4; 4×4×3;... not 2×3×3; 3×3×2;... and 4×3×3; 6×2×3; ... (equal multiplication) are considered as the same.