Xiaoli deposited a fixed deposit of 1,000 yuan in the bank on June 28 last year. The annual interest rate is 1.98% and the interest tax is 5%. How much is Xiaoli's principal and after-tax interest due this year?
小丽去年6月28日到银行存了一个定期储蓄1000元，年利率是1.98%利息税是5%，今年到期小丽可得本金和税后利息共多少元．
<gadget id="calculator">1.98 / 100</gadget>
<output>0.0198</output>

<gadget id="calculator">1_000 * 0.0198 * 1</gadget>
<output>19.8</output>

<gadget id="calculator">5 / 100</gadget>
<output>1/20 = around 0.05</output>

<gadget id="calculator">1 - (1/20)</gadget>
<output>19/20 = around 0.95</output>

<gadget id="calculator">19.8 * (19/20)</gadget>
<output>18.81</output>

<gadget id="calculator">1_000 + 18.81</gadget>
<output>1_018.81</output>

<result>1_018.81</result>