Grandpa Zhang deposited 15,000 yuan in the bank for five years, with an annual interest rate of 4.20% and an interest tax rate of 20%. After the five years expire, how much money will Grandpa Zhang get from the bank in total?
张爷爷把15000元钱存入银行五年，年利率是4.20%，利息税率是20%，五年到期后，张爷爷从银行一共可以拿到多少钱？
<gadget id="calculator">4.2 / 100</gadget>
<output>0.042</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">15_000 * 0.042 * 5 * (4/5)</gadget>
<output>2_520</output>

<gadget id="calculator">15_000 + 2_520</gadget>
<output>17_520</output>

<result>17_520</result>