On March 1, 2012, my mother deposited 20,000 yuan in the bank for one year. If the annual interest rate is 3.5%, how much money can the mother withdraw after the maturity date? (Exemption from interest tax)
2012年3月1日妈妈将20000元人民币存入银行，定期一年．如果按年利率3.5%计算，到期后，妈妈可取出多少元？(免征利息税)
<gadget id="calculator">3.5 / 100</gadget>
<output>0.035</output>

<gadget id="calculator">20_000 * 0.035 * 1</gadget>
<output>700</output>

<gadget id="calculator">700 + 20_000</gadget>
<output>20_700</output>

<result>20_700</result>