Xiaoli deposited the 500 yuan funded by Teacher Wang into the bank for three years. If the annual interest rate is 4.86%, how much can she get back the principal and after-tax interest at maturity?
小丽把王老师资助的500元钱存入银行，定期三年．如果年利率是4.86%，到期她可以取回本金和税后利息共多少元？
<gadget id="calculator">4.86 / 100</gadget>
<output>0.0486</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">500 * 0.0486 * 3 * (19/20)</gadget>
<output>69.255</output>

<gadget id="calculator">500 + 69.255</gadget>
<output>569.255</output>

<result>569.255</result>