Complex sentence: MIAL will undertake the design and civil construction of the three stations, costing 600 crore, on its own, and will pay the estimated cost of electromechanical equipment (around 177 crore) in three equal installments over three years.
Split into simpler sentences: MIAL will undertake the design and civil construction of the three stations, costing 600 crore, on its own. It will pay the estimated cost of electromechanical equipment (around 177 crore) in three equal installments over three years.