Mom deposits 4,000 yuan in the bank this year for two years. If the annual interest rate is 2.45%, how much will be the principal and interest when it matures? (Exemption from interest tax)
妈妈今年将4000元钱存入银行，定期二年，如果年利率为2.45%，到期时应得本金和利息多少元．(免交利息税)
<gadget id="calculator">2.45 / 100</gadget>
<output>0.0245</output>

<gadget id="calculator">4_000 * 0.0245 * 2</gadget>
<output>196</output>

<gadget id="calculator">4_000 + 196</gadget>
<output>4_196</output>

<result>4_196</result>