The Maisi family bought a 1,000-yuan construction bond for three years. If the annual interest rate of the construction bond is 5.25%, how much is the total principal and interest when it matures?
小麦斯家买了1000元建设债券，定期三年．如果建设债券的年利率是5.25%，到期时本金和利息一共是多少元？
<gadget id="calculator">5.25 / 100</gadget>
<output>0.0525</output>

<gadget id="calculator">1_000 * 0.0525 * 3</gadget>
<output>157.5</output>

<gadget id="calculator">157.5 + 1_000</gadget>
<output>1_157.5</output>

<result>1_157.5</result>