Mom deposits 10,000 yuan in the bank for two years on a regular basis with an annual interest rate of 4.40%. After the maturity, 5% interest tax will be deducted. How much is the after-tax interest?
妈妈将10000元钱存入银行，定期两年，年利率是4.40%，到期后扣掉5%的利息税，税后利息多少元．
<gadget id="calculator">4.4 / 100</gadget>
<output>0.044</output>

<gadget id="calculator">5 / 100</gadget>
<output>1/20 = around 0.05</output>

<gadget id="calculator">1 - (1/20)</gadget>
<output>19/20 = around 0.95</output>

<gadget id="calculator">10_000 * 0.044 * 2 * (19/20)</gadget>
<output>836</output>

<result>836</result>