Monthly Accumulation of PV

PV	Difference	Percentage	PV	Multiply from	Amount	Purchasing Amount
500	500	5%	25	18	450	15000
2000	1500	8%	120	18	2160	45000
4500	2500	11%	275	18	4950	75000
7500	3000	14%	420	18	7560	90000
10000	2500	17%	425	18	7650	75000
					22770	300000