A Capitalized cost was computed to be ₱2M. The structure includes some additional expenses of ₱100,000 at the beginning of the year for the next 15 years, a renewal cost of ₱200,0000 would occur in which the expected life of the structure is 5 years. Another cost to consider starting at the end of the tenth year for 20 years is expected amounting to ₱10,000. If the interest rate is 9% per year, determine the perpetual maintenance of this structure.

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