720122 divided by 84 
The aim is to understand the frequency of 84 in 720122.

Moving on to step 1:
7 divided by 84 is 0 with a remainder of 7.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 7, we get 7.
Fetch the next digit (2) from the dividend, attach it to 7 and continue: 72 / 84

On to step 2:
If we divide 72 by 84, we get 0 and a remainder of 72.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 72 to get 72.
Include the next digit (0) from the dividend after 72, then repeat: 720 / 84

Step 3:
84 can be fit into 720 8 times, resulting in a remainder of 48.
Record the quotient 8 as the next digit in the result. 
Result so far: 8.0
Subtracting 672 from 720 leaves us with 48.
Bring next digit (1) of the dividend behind the 48 and repeat the process: 481 / 84

On to step 4:
If we divide 481 by 84, we get 5 and a remainder of 61.
Record the quotient 5 as the next digit in the result. 
Result so far: 85.0
Deduct 420 from 481 and we're left with 61.
Bring next digit (2) of the dividend behind the 61 and repeat the process: 612 / 84

Going ahead to step 5:
If we divide 612 by 84, we get 7 and a remainder of 24.
The next digit of our result is 7. 
Result so far: 857.0
If we take 588 away from 612, we end up with 24.
Bring next digit (2) of the dividend behind the 24 and repeat the process: 242 / 84

Step 6:
84 goes into 242 2 times with a remainder of 74.
Record the quotient 2 as the next digit in the result. 
Result so far: 8572.0
Deduct 168 from 242 and we're left with 74.
Since there are no more digits in the dividend, we add a zero to the remainder making it 740, and continue the process.

Step 7:
The number 84 fits into 740 8 times, leaving a remainder of 68.
The next digit of our result is 8. 
Result so far: 8572.8
Subtracting 672 from 740 leaves us with 68.
Since there are no more digits in the dividend, we add a zero to the remainder making it 680, and continue the process.

Going ahead to step 8:
The number 84 fits into 680 8 times, leaving a remainder of 8.
The number 8 becomes the next digit in our result. 
Result so far: 8572.88
If we take 672 away from 680, we end up with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

The final outcome is 8572.88, with a leftover of 0.008.