Step 1:
The first step to converting 13605.881208381 to a fraction is to re-write 13605.881208381 in the form p/q where p and q are both positive integers. To start with, 13605.881208381 can be written as simply 13605.881208381/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 13605.881208381, which in this case is 9. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 13605.881208381/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 13605.881208381/1 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 13605.881208381 as a fraction:
108847/8 / 1