Aunt Zhang deposits 20,000 yuan in the bank. It is known that the three-year interest rate is 3.5%. How much money can Aunt Zhang get back after three years?
张阿姨存入银行20000元，已知三年期利率为3.5%，三年后张阿姨共能取回多少钱？
<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>