Step 1:
The first step to converting 13216209.124406 to a fraction is to re-write 13216209.124406 in the form p/q where p and q are both positive integers. To start with, 13216209.124406 can be written as simply 13216209.124406/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 13216209.124406, which in this case is 6. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 13216209.124406/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 13216209.124406/1 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 13216209.124406 as a fraction:
13216209/1 / 1