We look at the division of 173281 by 84 
The aim is to understand the frequency of 84 in 173281.

Advancing to step 1:
When dividing 1 by 84, we get 0 with a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 1 leaves us with 1.
Append the next digit (7) from the dividend to 1 and continue with: 17 / 84

Let's proceed to step 2:
If we divide 17 by 84, we get 0 and a remainder of 17.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 17 to get 17.
Bring next digit (3) of the dividend behind the 17 and repeat the process: 173 / 84

Moving on to step 3:
173 divided by 84 is 2 with a remainder of 5.
Put 2 as the next digit of the answer. 
Result so far: 2.0
The remainder is 5 after subtracting 168 from 173.
Bring next digit (2) of the dividend behind the 5 and repeat the process: 52 / 84

On to step 4:
The number 84 fits into 52 0 times, leaving a remainder of 52.
Use 0 as the next digit of our solution. 
Result so far: 20.0
If we take 0 away from 52, we end up with 52.
Append the next digit (8) from the dividend to 52 and continue with: 528 / 84

Step 5:
When dividing 528 by 84, we get 6 with a remainder of 24.
The next digit of our result is 6. 
Result so far: 206.0
Subtract 504 from 528 to get 24.
Grab the next digit (1) from the dividend, add it to 24, then carry on: 241 / 84

Moving on to step 6:
The number 84 fits into 241 2 times, leaving a remainder of 73.
Put 2 as the next digit of the answer. 
Result so far: 2062.0
If we take 168 away from 241, we end up with 73.
Since there are no more digits in the dividend, we add a zero to the remainder making it 730, and continue the process.

On to step 7:
The number 84 fits into 730 8 times, leaving a remainder of 58.
The next digit of our result is 8. 
Result so far: 2062.8
If we subtract 672 from 730, we get 58.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

Advancing to step 8:
580 divided by 84 is 6 with a remainder of 76.
The next digit of our result is 6. 
Result so far: 2062.86
The remainder is 76 after subtracting 504 from 580.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

Advancing to step 9:
760 divided by 84 is 9 with a remainder of 4.
Record the quotient 9 as the next digit in the result. 
Result so far: 2062.869
Deduct 756 from 760 and we're left with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Advancing to step 10:
The number 84 fits into 40 0 times, leaving a remainder of 40.
The number 0 becomes the next digit in our result. 
Result so far: 2062.869
If we subtract 0 from 40, we get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Moving on to step 11:
84 can be fit into 400 4 times, resulting in a remainder of 64.
Put 4 as the next digit of the answer. 
Result so far: 2062.86904
Subtract 336 from 400 to get 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Going ahead to step 12:
84 goes into 640 7 times with a remainder of 52.
The next digit of our result is 7. 
Result so far: 2062.869047
Deduct 588 from 640 and we're left with 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

Step 13:
When dividing 520 by 84, we get 6 with a remainder of 16.
The next digit of our result is 6. 
Result so far: 2062.8690476
The remainder is 16 after subtracting 504 from 520.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

On to step 14:
The number 84 fits into 160 1 times, leaving a remainder of 76.
The next digit of our result is 1. 
Result so far: 2062.86904761
If we take 84 away from 160, we end up with 76.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

The final result is 2062.86904761 with a remainder of 7.6e-08.