Xiao Ming deposits 100 yuan in the bank as a lump sum deposit for three years, and the annual interest rate is calculated at 5%. After the maturity, the total amount of principal and interest can be obtained.
小明把100元存入银行整存整取三年，年利率按5%计算，到期后可得到本金和利息共多少元．
<gadget id="calculator">5 / 100</gadget>
<output>1/20 = around 0.05</output>

<gadget id="calculator">100 * (1/20) * 3</gadget>
<output>15</output>

<gadget id="calculator">100 + 15</gadget>
<output>115</output>

<result>115</result>