Answer:
80.91
Explanation:
"8" represents 80 units (80 ones).
The decimal point separates the whole number part from the decimal part.
"9" after the decimal point represents 9 tenths (0.9).
"1" after the "9" represents 1 hundredth (0.01).
Combining these parts, you get the decimal number 80.91, where "80" is the whole number part, and "0.91" is the decimal part.