Xiaohong deposits 300 yuan in the bank for 2 years, calculated according to the annual interest rate of 4.50%, how much yuan will she get the principal and interest when it matures.
小红把300元钱存入银行2年，按年利率4.50%计算，到期时她可得到本金和利息共多少元．
<gadget id="calculator">4.5 / 100</gadget>
<output>0.045</output>

<gadget id="calculator">300 * 0.045 * 2</gadget>
<output>27</output>

<gadget id="calculator">300 + 27</gadget>
<output>327</output>

<result>327</result>