We look at the division of 38720 by 84 
The aim is to understand the frequency of 84 in 38720.

Advancing to step 1:
When dividing 3 by 84, we get 0 with a remainder of 3.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 3, we get 3.
Grab the next digit (8) from the dividend, add it to 3, then carry on: 38 / 84

Step 2:
84 goes into 38 0 times with a remainder of 38.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 38 and we're left with 38.
Take the next digit (7) from the dividend and append it to 38, then repeat: 387 / 84

Advancing to step 3:
84 goes into 387 4 times with a remainder of 51.
Record the quotient 4 as the next digit in the result. 
Result so far: 4.0
Deduct 336 from 387 and we're left with 51.
Take the next digit (2) from the dividend and append it to 51, then repeat: 512 / 84

Step 4:
84 goes into 512 6 times with a remainder of 8.
The next digit of our result is 6. 
Result so far: 46.0
The remainder is 8 after subtracting 504 from 512.
Take the next digit (0) from the dividend and append it to 8, then repeat: 80 / 84

Let's proceed to step 5:
80 divided by 84 is 0 with a remainder of 80.
The number 0 becomes the next digit in our result. 
Result so far: 460.0
Deduct 0 from 80 and we're left with 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Moving on to step 6:
If we divide 800 by 84, we get 9 and a remainder of 44.
Write down 9 as next digit of the result. 
Result so far: 460.9
If we take 756 away from 800, we end up with 44.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

Moving on to step 7:
When dividing 440 by 84, we get 5 with a remainder of 20.
Use 5 as the next digit of our solution. 
Result so far: 460.95
Deduct 420 from 440 and we're left with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

On to step 8:
84 can be fit into 200 2 times, resulting in a remainder of 32.
Write down 2 as next digit of the result. 
Result so far: 460.952
If we take 168 away from 200, we end up with 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Moving on to step 9:
84 goes into 320 3 times with a remainder of 68.
The next digit of our result is 3. 
Result so far: 460.9523
If we subtract 252 from 320, we get 68.
Since there are no more digits in the dividend, we add a zero to the remainder making it 680, and continue the process.

Step 10:
84 can be fit into 680 8 times, resulting in a remainder of 8.
Write down 8 as next digit of the result. 
Result so far: 460.95238
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.

Let's proceed to step 11:
If we divide 80 by 84, we get 0 and a remainder of 80.
The number 0 becomes the next digit in our result. 
Result so far: 460.95238
If we subtract 0 from 80, we get 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Step 12:
84 can be fit into 800 9 times, resulting in a remainder of 44.
Use 9 as the next digit of our solution. 
Result so far: 460.9523809
Subtracting 756 from 800 leaves us with 44.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

Moving on to step 13:
440 divided by 84 is 5 with a remainder of 20.
The next digit of our result is 5. 
Result so far: 460.95238095
Subtract 420 from 440 to get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

After the division, we end up with 460.95238095 and a remainder of 2e-08.