In May 2014, Grandpa Li deposited 50,000 yuan in the bank for a period of three years, with an annual interest rate of 5%. How much money can he get back when it expires?
2014年5月，李爷爷存入银行5万元，定期三年，年利率为5%，到期时他一共可以取回多少钱？
<gadget id="calculator">5 / 100</gadget>
<output>1/20 = around 0.05</output>

<gadget id="calculator">50_000 * (1/20) * 3</gadget>
<output>7_500</output>

<gadget id="calculator">50_000 + 7_500</gadget>
<output>57_500</output>

<result>57_500</result>