Step 1:
The first step to converting 683518.7623399 to a fraction is to re-write 683518.7623399 in the form p/q where p and q are both positive integers. To start with, 683518.7623399 can be written as simply 683518.7623399/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 683518.7623399, which in this case is 7. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 683518.7623399/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 683518.7623399/1 each by 10000000:
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 683518.7623399 as a fraction:
683519/1 / 1