Step 1:
The first step to converting 669839.987156 to a fraction is to re-write 669839.987156 in the form p/q where p and q are both positive integers. To start with, 669839.987156 can be written as simply 669839.987156/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 669839.987156, which in this case is 6. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 669839.987156/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 669839.987156/1 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 669839.987156 as a fraction:
669840/1 / 1