In September 2007, Xiao Ming's family earned 3,000 yuan, and deposited 30% of the income in the bank for two years, with an annual interest rate of 4.5%. How much is the principal and after-tax interest in total? (Interest tax is paid at 5%)
2007年9月，小明家收入3000元，把收入的30%存入银行，定期两年，年利率4.5%，到期后得到本金和税后利息共多少元？(利息税按5%上交)
<gadget id="calculator">30 / 100</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">3_000 * (3/10)</gadget>
<output>900</output>

<gadget id="calculator">4.5 / 100</gadget>
<output>0.045</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">3_000 * (3/10) * 2 * 0.045 * (19/20)</gadget>
<output>76.95</output>

<gadget id="calculator">900 + 76.95</gadget>
<output>976.95</output>

<result>976.95</result>