In March this year, Grandpa Zhang deposited 5,000 yuan in the bank for a period of three years with an annual interest rate of 4.25%. How much money can Grandpa Zhang get back after the expiration date?
今年3月，张爷爷把5000元钱存入银行，存期三年，年利率为4.25%．到期后张爷爷一共能取回多少钱？
<gadget id="calculator">4.25 / 100</gadget>
<output>0.0425</output>

<gadget id="calculator">5_000 * 0.0425 * 3</gadget>
<output>637.5</output>

<gadget id="calculator">5_000 + 637.5</gadget>
<output>5_637.5</output>

<result>5_637.5</result>