Step 1:
The first step to converting 80021.406541752 to a fraction is to re-write 80021.406541752 in the form p/q where p and q are both positive integers. To start with, 80021.406541752 can be written as simply 80021.406541752/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 80021.406541752, which in this case is 9. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 80021.406541752/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 80021.406541752/1 each by 1000000000:
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 80021.406541752 as a fraction:
400107/5 / 1