The sum of P4200 will be withdrawn from a fund at 3-month intervals, the first withdrawal to be made 3 months hence. The principal in the fund at present is P45,000, and the interest rate of the fund is 5 percent per quarterly period. How many withdrawals can be made, if it is necessary to maintain a minimum balance of P6000 in the fund?

Round your final answer to 4 decimal places, do not round your intermediate solutions.