Convert 98.6 degrees Fahrenheit to Celsius.

Step 1 ：Step 1: Use the formula to convert Fahrenheit to Celsius, which is \(C = (F - 32) \times \frac{5}{9}\)

Step 2 ：Step 2: Substitute the given Fahrenheit temperature into the formula, so \(C = (98.6 - 32) \times \frac{5}{9}\)

Step 3 ：Step 3: Simplify the expression inside the parentheses first, so \(C = 66.6 \times \frac{5}{9}\)

Step 4 ：Step 4: Multiply 66.6 by \(\frac{5}{9}\) to get the final Celsius temperature