Mom deposits 10,000 yuan in the bank for one year, with an annual interest rate of 1.98% and interest tax of 20%. After the maturity date, mother can get back the principal and interest from the bank.
妈妈将10000元人民币存入银行，定期一年，年利率1.98%，利息税是20%，到期后妈妈可以从银行取回本金和利息共多少元．
<gadget id="calculator">1.98 / 100</gadget>
<output>0.0198</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">10_000 * 0.0198 * 1 * (4/5)</gadget>
<output>158.4</output>

<gadget id="calculator">158.4 + 10_000</gadget>
<output>10_158.4</output>

<result>10_158.4</result>