Step 1:
The first step to converting 66549.643707918 to a fraction is to re-write 66549.643707918 in the form p/q where p and q are both positive integers. To start with, 66549.643707918 can be written as simply 66549.643707918/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 66549.643707918, which in this case is 9. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 66549.643707918/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 66549.643707918/1 each by 1000000000:
Step 3:
Now the last step is to simplify the fraction (if possible) by finding similar factors and cancelling them out, which leads to the following answer for 66549.643707918 as a fraction:
199649/3 / 1