Good, so here are the common cases for ₦2,500,000 at 16.77% per annum over 12 months.

Annual compounding (once a year)

Interest = 2,500,000 × 0.1677 = ₦419,250
Total after 12 months: ₦2,919,250

Monthly compounding

Monthly rate = 16.77% ÷ 12 = 1.3975%
Growth factor = (1.013975)¹² ≈ 1.18115
Total after 12 months ≈ ₦2,952,880
Interest ≈ ₦452,880

Quarterly compounding

Quarterly rate = 4.1925%
Growth factor = (1.041925)⁴ ≈ 1.17862
Total after 12 months ≈ ₦2,946,550
Interest ≈ ₦446,550

Daily compounding (365 days)

Growth factor = (1 + 0.1677/365)³⁶⁵ ≈ 1.18255
Total after 12 months ≈ ₦2,956,370
Interest ≈ ₦456,370

and use can use fokona calculator to calculate the investment