Xiao Ming deposits 1,000 yuan of pocket money in the bank for a period of 3 years with an annual interest rate of 3.5%. How much is the interest earned after maturity?
小明把1000元的零花钱存入银行里，存期3年，年利率是3.5%，到期后所得的利息是多少元．
<gadget id="calculator">3.5 / 100</gadget>
<output>0.035</output>

<gadget id="calculator">1_000 * 0.035 * 3</gadget>
<output>105</output>

<result>105</result>