Xiaoying deposits 2,000 yuan in the bank at an annual interest rate of 2.45%, and calculates the total amount of the principal and after-tax interest she should get after two years.
小英把2000元按年利率2.45%存入银行，两年后计算她应得到的本金和税后利息共是多少元．
<gadget id="calculator">2.45 / 100</gadget>
<output>0.0245</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">2_000 * 0.0245 * 2 * (4/5)</gadget>
<output>78.4</output>

<gadget id="calculator">2_000 + 78.4</gadget>
<output>2_078.4</output>

<result>2_078.4</result>