Step 1:
The first step to converting 20651.848756689 to a fraction is to re-write 20651.848756689 in the form p/q where p and q are both positive integers. To start with, 20651.848756689 can be written as simply 20651.848756689/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 20651.848756689, which in this case is 9. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 20651.848756689/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 20651.848756689/1 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 20651.848756689 as a fraction:
123911/6 / 1