Xiao Ming deposits 500 yuan in the bank, deposits and withdraws in lump sum for 2 years, and the annual interest rate is 2.5%. What is the total amount of interest and principal that can be earned at maturity.
小明把500元钱存入银行，整存整取2年，年利率是2.5%．到期时可得利息和本金共多少元．
<gadget id="calculator">2.5 / 100</gadget>
<output>0.025</output>

<gadget id="calculator">500 * 0.025 * 2</gadget>
<output>25</output>

<gadget id="calculator">500 + 25</gadget>
<output>525</output>

<result>525</result>