Step 1:
The first step to converting 19640355.489005 to a fraction is to re-write 19640355.489005 in the form p/q where p and q are both positive integers. To start with, 19640355.489005 can be written as simply 19640355.489005/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 19640355.489005, which in this case is 6. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 19640355.489005/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 19640355.489005/1 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 19640355.489005 as a fraction:
19640355/1 / 1