Is it correct to read mixed fraction 35 466/635 as ' thirty five and four hundred sixty six over six hundred thirty five'? I know we can read it as thirty five and four hundred sixty six six hundred thirty fifths. But practically it is not possible. Thank you.
For larger mixed fractions, such as in your example, where reading the numbers in full results in a sentence so long that it doesn't easily convey that the number is a fraction, some people will simply read it as:
Thirty five and four-six-six over six-three-five
Since the phrase either side of over is relatively short, this is usually clearer.