In this number, we separate the whole number from the items or digits that come after the decimal point. With that, we have,
8 and 0.42
The repeating digits after the decimal point is converted to a fraction form by dividing the number by 9 for each repeating digit.
In this item, we take that 0.42 is repeating such that the simplest form would be,
42/99
Simplifying will give us an answer of 14/33
Hence, the mixed form of the number is 8 14/33.