Calculate the simple interest given principal amount, annual interest rate (as a percentage), and time period in years. Return the interest amount rounded to 2 decimal places.
Formula: Simple Interest = (Principal × Rate × Time) / 100
Examples:
Input: principal = 1000, rate = 5, years = 2
Output: 100.00
Explanation: (1000 × 5 × 2) / 100 = 100.00
Input: principal = 5000, rate = 8.5, years = 3
Output: 1275.00
Explanation: (5000 × 8.5 × 3) / 100 = 1275.00
Input: principal = 0, rate = 10, years = 5
Output: 0.00
Explanation: Principal is 0, so interest is 0
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