Line L₁ of slope 2 and line L₂ of slope  intersect at the origin O. In the first quadrant, P₁, P₂,….P₁₂ are 12 points on line L₁ and Q₁, Q₂, …..Q₉  are 9 points on line L₂. Then the total number of triangles, that can be formed having vertices at three of the 22 points O, P₁, P₂,… P₁₂, Q₁, Q₂,….Q₉, is: