Step 1:
The first step to converting 18681599.840838 to a fraction is to re-write 18681599.840838 in the form p/q where p and q are both positive integers. To start with, 18681599.840838 can be written as simply 18681599.840838/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 18681599.840838, which in this case is 6. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 18681599.840838/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 18681599.840838/1 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 18681599.840838 as a fraction:
18681599/1 / 1