Calculate the due interest earned by a principal (initial amount of money lent, deposited or borrowed) of 14,400 units (Dollar, Euro, Pound, etc.), from date: Jan 25, 2018, to date: Jul 25, 2018, namely for a period of 181 days (6 Months), with an annual simple flat interest rate of 3% if the commission fee (withdrawal or payment) is 1,461,422%.

Principal (initial amount), P = 14,400


Annual simple interest rate, R = 3%


From date: Jan 25, 2018


To date: Jul 25, 2018


Duration, T = 181 days (6 Months)


Commission fee (withdrawal or payment), F = 1,461,422%


No. of days in a year, N = 365


I = Simple interest:

I = (P × R × T) ÷ N =


(14,400 × 3% × 181) ÷ 365 =


(14,400 × 3 × 181) ÷ (365 × 100) =


7,819,200 ÷ 36,500 ≈


214.224657534247 ≈


214.22

B = Amount earned before deducting the
commission fee (withdrawal or payment):

B = P + I =


14,400 + 214.224657534247 =


14,614.224657534247 ≈


14,614.22

D = Amount earned after deducting the
commission fee (withdrawal or payment):

D = B - F =


B - F% × B =


(1 - F%) × B =


(1 - 1,461,422%) × 14,614.224657534247 =


- 1,461,322% × 14,614.224657534247 ≈


- 213,560,880.049972608945 ≈


- 213,560,880.05

Pr = Investment profit:

Pr = D - P =


- 213,560,880.049972608945 - 14,400 =


- 213,575,280.049972608945 ≈


- 213,575,280.05

Signs: % percent, ÷ divide, × multiply, ≈ approximately equal;

Writing numbers: comma ',' as thousands separator; point '.' as a decimal mark;

Calculate simple flat rate interest on a principal borrowed, lent

Simple flat rate interest = (Principal × Annual simple flat interest rate × Duration in days) ÷ Number of days in a year

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