Remzi Aydın. As per my knowledge MEA, we use as a stabilizer to soluble of the precursor in the solvents, so we don't calculate the molarity of MEA for each salt so generally we can calculate as

1M of MEA= 1000 * how much MEA you add into solution (in gm) / molecular weight (M.W) of MEA * amount of solvent.

(Note: MEA is liquid, so you need to divide M.W by its density value that you can use as M.W of MEA)

example if I want to calculate how much we need to add MEA solution to get 1M of MEA then we have to use the formula

Amount of MEA= molecular weight (M.W) of MEA * amount of solvent * 1 (molarity) / 1000