Step 1:
The first step to converting 39520.899320123 to a fraction is to re-write 39520.899320123 in the form p/q where p and q are both positive integers. To start with, 39520.899320123 can be written as simply 39520.899320123/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 39520.899320123, which in this case is 9. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 39520.899320123/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 39520.899320123/1 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 39520.899320123 as a fraction:
355688/9 / 1