Step 1:
The first step to converting 20017660.643851 to a fraction is to re-write 20017660.643851 in the form p/q where p and q are both positive integers. To start with, 20017660.643851 can be written as simply 20017660.643851/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 20017660.643851, which in this case is 6. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 20017660.643851/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 20017660.643851/1 each by 1000000:
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 20017660.643851 as a fraction:
20017660/1 / 1