Honghong deposits 600 yuan of New Year's money in the bank for a period of 3 years. If the annual interest rate is 2.5%, what is the total amount of principal and interest that can be obtained upon maturity.
红红把600元压岁钱存入银行，定期3年，如果年利率是2.5%，到期可以取得本金和利息共多少元．
<gadget id="calculator">2.5 / 100</gadget>
<output>0.025</output>

<gadget id="calculator">600 * 0.025 * 3</gadget>
<output>45</output>

<gadget id="calculator">600 + 45</gadget>
<output>645</output>

<result>645</result>