To round 197.82 to the nearest whole number, follow these steps:
Identify the decimal part: In the number 197.82, the first digit after the decimal point is 8.
Apply rounding rules: Since the first digit after the decimal point (8) is greater than or equal to 5, you round the number up by 1.
Final rounded result: The number becomes 198.
Thus, 197.82 rounded to the nearest whole number is 198.