Step 1:
The first step to converting 873599.128815 to a fraction is to re-write 873599.128815 in the form p/q where p and q are both positive integers. To start with, 873599.128815 can be written as simply 873599.128815/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 873599.128815, which in this case is 6. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 873599.128815/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 873599.128815/1 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 873599.128815 as a fraction:
873599/1 / 1