Xiao Ming's father has 20,000 yuan. Please do the math for him, which one will give him more income at maturity when he deposits and withdraws in three years or buys three-year treasury bonds? How much is the difference? (The annual interest rate of the three-year lump sum deposit and withdrawal deposit is 4.25%, and the annual interest rate of the three-year treasury bond is 5.00%)
小明的爸爸有20000元人民币．请你帮他算一算，他存整存整取三年期和购买三年期国债的到期收益哪个多？相差多少？(三年期整存整取存款的年利率为4.25%，三年期国债的年利率为5.00%)
<gadget id="calculator">5 / 100</gadget>
<output>1/20 = around 0.05</output>

<gadget id="calculator">20_000 * (1/20) * 3</gadget>
<output>3_000</output>

<gadget id="calculator">4.25 / 100</gadget>
<output>0.0425</output>

<gadget id="calculator">20_000 * 0.0425 * 3</gadget>
<output>2_550</output>

<gadget id="calculator">3_000 - 2_550</gadget>
<output>450</output>

<result>450</result>