Step 1:
The first step to converting 166228.21071663 to a fraction is to re-write 166228.21071663 in the form p/q where p and q are both positive integers. To start with, 166228.21071663 can be written as simply 166228.21071663/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 166228.21071663, which in this case is 8. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 166228.21071663/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 166228.21071663/1 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 166228.21071663 as a fraction:
664913/4 / 1