Mr. Wang deposits 20,000 yuan in the bank for a period of 3 years. The annual interest rate for the three-year period is 5.40%. (Interest tax is 5%)
王老师将20000元钱存入银行，定期3年，三年期的年利率是5.40%，到期后，王老师可得本金和利息一共多少元？(利息税是5%)
<gadget id="calculator">5.4 / 100</gadget>
<output>0.054</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">20_000 * 0.054 * 3 * (19/20)</gadget>
<output>3_078</output>

<gadget id="calculator">20_000 + 3_078</gadget>
<output>23_078</output>

<result>23_078</result>