Step 1:
The first step to converting 81921.141939688 to a fraction is to re-write 81921.141939688 in the form p/q where p and q are both positive integers. To start with, 81921.141939688 can be written as simply 81921.141939688/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 81921.141939688, which in this case is 9. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 81921.141939688/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 81921.141939688/1 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 81921.141939688 as a fraction:
573448/7 / 1