cost of investment middle of the year

Dramatic Corporation has a quarterly dividend of Po.75 per share and had t following stock closing prices at the end of each quarter as P 50, P 55, P 60 an P65, respectively. If this was offered to an investor under a DRIP program and that the entity will not recognized fractional shares for it forfeits the same. It's P50 par value was initially offered at par at the start of the year, where an investor purchased 200 shares. What is the cost of investment middle of the year