Xiao Ming has deposited 500 yuan in the "Children's Bank" at the school, and the monthly interest rate is 0.25%. He has saved it for one semester (calculated as five months), and the total amount of principal and interest he can get when the maturity is due.
小明在学校"少儿银行"里存了500元，月利率是0.25%，他存了一个学期(按五个月计算)，到期时可得到本息共多少元．
<gadget id="calculator">0.25 / 100</gadget>
<output>0.0025</output>

<gadget id="calculator">500 * 0.0025 * 5</gadget>
<output>6.25</output>

<gadget id="calculator">500 + 6.25</gadget>
<output>506.25</output>

<result>506.25</result>