#### Principal (initial amount), P = 100,000,000,000

#### Annual simple interest rate, R = 1.3%

#### From date: Jan 1, 2017

#### To date: May 1, 2017

#### Duration, T = 120 days (4 Months)

#### Commission fee (withdrawal or payment), F = 0%

#### No. of days in a year, N = 365

## I = Simple interest:

#### I = (P × R × T) ÷ N =

#### (100,000,000,000 × 1.3% × 120) ÷ 365 =

#### (100,000,000,000 × 1.3 × 120) ÷ (365 × 100) =

#### 15,600,000,000,000 ÷ 36,500 ≈

#### 427,397,260.27397260274 ≈

#### 427,397,260.27

## B = Amount earned:

#### B = P + I =

#### 100,000,000,000 + 427,397,260.27397260274 =

#### 100,427,397,260.27397260274 ≈

#### 100,427,397,260.27