Determine the monthly consumption of lime-soda ash (kg/month) for water softening whose analysis is presented below. The volumetric flow is 1800 m/d.

\begin{tabular}{|c|c|c|c|} \hline Parmetro & Concentracin(mg/L) & Parmetro & Concentracin(mg/L) \\ \hline CO2 & 15 & HCO3 & 65 \\ \hline Mg+2 & 47 & CO2 & 35 \\ \hline Ca+2 & 22 & & \\ \hline \end{tabular}