Step 1:
The first step to converting 8200.642800484 to a fraction is to re-write 8200.642800484 in the form p/q where p and q are both positive integers. To start with, 8200.642800484 can be written as simply 8200.642800484/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 8200.642800484, which in this case is 9. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 8200.642800484/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 8200.642800484/1 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 8200.642800484 as a fraction:
90207/11 / 1