Step 1:
The first step to converting 12997217.399645 to a fraction is to re-write 12997217.399645 in the form p/q where p and q are both positive integers. To start with, 12997217.399645 can be written as simply 12997217.399645/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 12997217.399645, which in this case is 6. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 12997217.399645/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 12997217.399645/1 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 12997217.399645 as a fraction:
12997217/1 / 1