Step 1:
The first step to converting 1681405580.9464 to a fraction is to re-write 1681405580.9464 in the form p/q where p and q are both positive integers. To start with, 1681405580.9464 can be written as simply 1681405580.9464/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 1681405580.9464, which in this case is 4. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 1681405580.9464/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 1681405580.9464/1 each by 10000:
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 1681405580.9464 as a fraction:
1681405580/1 / 1