Xiao Li deposits 30,000 yuan in the bank for one year, and the annual interest rate is 4.14%. How much is the principal and interest?
小李将3万元存入银行一年，年利率是4.14%，到期可得本金和利息共多少元．
<gadget id="calculator">4.14 / 100</gadget>
<output>0.0414</output>

<gadget id="calculator">30_000 * 0.0414 * 1</gadget>
<output>1_242</output>

<gadget id="calculator">30_000 + 1_242</gadget>
<output>31_242</output>

<result>31_242</result>