If the decimal part of a decimal is enlarged by 4 times, the decimal will become 6.6, and if the decimal part of the decimal is enlarged by 8 times, the decimal will become 9.2. What is the original decimal?
把一个小数的小数部分扩大4倍，这个小数就变成6.6，把这个小数的小数部分扩大8倍，这个小数就变成9.2，原来这个小数是多少．
<result>4.65</result>