Aunt Li deposits 50,000 yuan in the bank with a deposit period of two years and an annual interest rate of 4.5%. How much yuan can she get back the principal and interest when it matures?
李大妈把50000元存入银行，存期两年，年利率是4.5%，到期时她可以取回本金和利息共多少元？
<gadget id="calculator">4.5 / 100</gadget>
<output>0.045</output>

<gadget id="calculator">50_000 * 0.045 * 2</gadget>
<output>4_500</output>

<gadget id="calculator">50_000 + 4_500</gadget>
<output>54_500</output>

<result>54_500</result>