Li Hua deposited 800 yuan in the bank for two years, with an annual interest rate of 3.96%. When it matures, what is the total amount of the principal and interest?
李华将800元钱存入银行，存定期两年，年利率是3.96%，到期时，本金和利息一共是多少元．
<gadget id="calculator">3.96 / 100</gadget>
<output>0.0396</output>

<gadget id="calculator">800 * 0.0396 * 2</gadget>
<output>63.36</output>

<gadget id="calculator">800 + 63.36</gadget>
<output>863.36</output>

<result>863.36</result>