Mom deposits 5,000 yuan in the bank for three years, with an annual interest rate of 2.25%. After the maturity date, the bank will deduct 20% of the personal interest tax, so when the maturity date, how much can the mother get back the principal and interest from the bank?
妈妈将5000元钱存入银行，定期三年，年利率是2.25%．到期后银行要扣个人20%的利息税，那么到期时，妈妈可从银行取回本息共多少元？
<gadget id="calculator">2.25 / 100</gadget>
<output>0.0225</output>

<gadget id="calculator">5_000 * 0.0225 * 3</gadget>
<output>337.5</output>

<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 - (1/5)</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">337.5 * (4/5)</gadget>
<output>270</output>

<gadget id="calculator">270 + 5_000</gadget>
<output>5_270</output>

<result>5_270</result>