Step 1:
The first step to converting 208816.40139678 to a fraction is to re-write 208816.40139678 in the form p/q where p and q are both positive integers. To start with, 208816.40139678 can be written as simply 208816.40139678/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 208816.40139678, which in this case is 8. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 208816.40139678/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 208816.40139678/1 each by 100000000:
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 208816.40139678 as a fraction:
417633/2 / 1