Dongdong's father saved 30,000 yuan in education savings, fixed for three years, with an annual interest rate of 3.5%, and no need to pay interest tax. After the maturity date, how much dad can actually get with principal and interest.
东东的爸爸存了三万元的教育储蓄，定期三年，年利率为3.5%，并无需缴纳利息税．到期后爸爸实际可连本带利得到多少元．
<gadget id="calculator">3.5 / 100</gadget>
<output>0.035</output>

<gadget id="calculator">30_000 * 0.035 * 3</gadget>
<output>3_150</output>

<gadget id="calculator">30_000 + 3_150</gadget>
<output>33_150</output>

<result>33_150</result>