Step 1:
The first step to converting 156821.79996132 to a fraction is to re-write 156821.79996132 in the form p/q where p and q are both positive integers. To start with, 156821.79996132 can be written as simply 156821.79996132/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 156821.79996132, which in this case is 8. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 156821.79996132/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 156821.79996132/1 each by 100000000:
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 156821.79996132 as a fraction:
627287/4 / 1