Step 1:
The first step to converting 8321220.221578 to a fraction is to re-write 8321220.221578 in the form p/q where p and q are both positive integers. To start with, 8321220.221578 can be written as simply 8321220.221578/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 8321220.221578, which in this case is 6. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 8321220.221578/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 8321220.221578/1 each by 1000000:
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 8321220.221578 as a fraction:
8321220/1 / 1