When Kobayashi calculated the addition of decimals, he regarded one of the addends, 4.86, as 48.6, and the result was 52.4. What should be the correct result?
小林在计算小数加法时，把其中的一个加数4.86看成48.6，结果得52.4，正确的结果应该是多少？
<gadget id="calculator">52.4 - 48.6</gadget>
<output>3.8</output>

<gadget id="calculator">3.8 + 4.86</gadget>
<output>8.66</output>

<result>8.66</result>