It seems like you might be referring to the repeating decimal 89.777..., which can be expressed as 89.777... = 89.7777777..., where the digit "7" repeats indefinitely.
This can also be converted into a fraction. To convert a repeating decimal to a fraction, you can use the following method:
Let \( x = 89.777... \).
Then, to isolate the repeating part, multiply by 10 (since one digit is repeating):
\[ 10x = 897.777... \]
Next, we can subtract the original \( x \) from this equation:
\[ 10x - x = 897.777... - 89.777... \]
This simplifies to:
\[ 9x = 808 \]
Now, we can solve for \( x \):
\[ x = \frac{808}{9} \]
So, the decimal \( 89.777... \) can be expressed as the fraction \( \frac{808}{9} \). If you have a different focus or need further clarification on this value, please let me know!