Dad has deposited 20,000 yuan in the Bank of China, the deposit period is three years, and the annual interest rate is 3.5%, so how much money can Dad withdraw when it expires?
爸爸在中国银行存了2万元钱，存期为三年，年利率为3.5%，那么到期时爸爸一共能取出多少钱？
<gadget id="calculator">2 * 10_000</gadget>
<output>20_000</output>

<gadget id="calculator">3.5 / 100</gadget>
<output>0.035</output>

<gadget id="calculator">20_000 * 0.035 * 3</gadget>
<output>2_100</output>

<gadget id="calculator">20_000 + 2_100</gadget>
<output>22_100</output>

<result>22_100</result>