Uncle Wang has deposited 50,000 yuan in the bank, with a deposit period of 5 years, an annual interest rate of 3.6%, and 20% interest tax will be deducted at maturity. How much is the total amount of principal and interest?
王大爷在银行存了50000元钱，存期5年，年利率为3.6%，到期扣除20%的利息税，可取本金和利息共多少元？
<gadget id="calculator">3.6 / 100</gadget>
<output>0.036</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">50_000 * 5 * 0.036 * (4/5)</gadget>
<output>7_200</output>

<gadget id="calculator">7_200 + 50_000</gadget>
<output>57_200</output>

<result>57_200</result>