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1.The simple interest formula is crucial for calculating the total amount of money earned over a period of time.
简单利息公式对于计算一段时间内赚取的总金额至关重要。
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2. To determine the compound interest, you need to know the principal amount and the number of times that interest is compounded per year.
要计算复利，你需要知道本金金额和每年复利的次数。
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3. Simple interest is calculated by multiplying the principal amount by the interest rate and then adding theresult to the principal amount.
简单利息是通过将本金金额乘以利率并加上结果来计算的。