Mr. Li deposits 20,000 yuan in the bank, with a deposit period of two years and an annual interest rate of 3.75%. When the maturity expires, Mr. Li withdraws a total of RMB 20,000 in principal and interest.
李老师在银行存入两万元钱，存期两年，年利率3.75%，到期李老师共取出本金和利息多少元．
<gadget id="calculator">3.75 / 100</gadget>
<output>0.0375</output>

<gadget id="calculator">20_000 * 0.0375 * 2</gadget>
<output>1_500</output>

<gadget id="calculator">20_000 + 1_500</gadget>
<output>21_500</output>

<result>21_500</result>