Step 1:
The first step to converting 668612006.62012 to a fraction is to re-write 668612006.62012 in the form p/q where p and q are both positive integers. To start with, 668612006.62012 can be written as simply 668612006.62012/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 668612006.62012, which in this case is 5. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 668612006.62012/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 668612006.62012/1 each by 100000:
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 668612006.62012 as a fraction:
668612006/1 / 1