406851 ÷ 84 
The aim is to understand the frequency of 84 in 406851.

Let's proceed to step 1:
84 goes into 4 0 times with a remainder of 4.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 4, we end up with 4.
Include the next digit (0) from the dividend after 4, then repeat: 40 / 84

Going ahead to step 2:
84 goes into 40 0 times with a remainder of 40.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 40, we end up with 40.
Grab the next digit (6) from the dividend, add it to 40, then carry on: 406 / 84

Moving on to step 3:
If we divide 406 by 84, we get 4 and a remainder of 70.
Write down 4 as next digit of the result. 
Result so far: 4.0
Subtracting 336 from 406 leaves us with 70.
Bring next digit (8) of the dividend behind the 70 and repeat the process: 708 / 84

Step 4:
708 divided by 84 is 8 with a remainder of 36.
Record the quotient 8 as the next digit in the result. 
Result so far: 48.0
If we subtract 672 from 708, we get 36.
Append the next digit (5) from the dividend to 36 and continue with: 365 / 84

Going ahead to step 5:
365 divided by 84 is 4 with a remainder of 29.
The number 4 becomes the next digit in our result. 
Result so far: 484.0
Deduct 336 from 365 and we're left with 29.
Grab the next digit (1) from the dividend, add it to 29, then carry on: 291 / 84

Moving on to step 6:
291 divided by 84 is 3 with a remainder of 39.
The number 3 becomes the next digit in our result. 
Result so far: 4843.0
Subtracting 252 from 291 leaves us with 39.
Since there are no more digits in the dividend, we add a zero to the remainder making it 390, and continue the process.

Let's proceed to step 7:
The number 84 fits into 390 4 times, leaving a remainder of 54.
Use 4 as the next digit of our solution. 
Result so far: 4843.4
The remainder is 54 after subtracting 336 from 390.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

Step 8:
84 goes into 540 6 times with a remainder of 36.
Write down 6 as next digit of the result. 
Result so far: 4843.46
If we take 504 away from 540, we end up with 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Advancing to step 9:
84 can be fit into 360 4 times, resulting in a remainder of 24.
Record the quotient 4 as the next digit in the result. 
Result so far: 4843.464
If we subtract 336 from 360, we get 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Let's proceed to step 10:
240 divided by 84 is 2 with a remainder of 72.
The number 2 becomes the next digit in our result. 
Result so far: 4843.4642
If we take 168 away from 240, we end up with 72.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

Step 11:
The number 84 fits into 720 8 times, leaving a remainder of 48.
The number 8 becomes the next digit in our result. 
Result so far: 4843.46428
If we subtract 672 from 720, we get 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

On to step 12:
When dividing 480 by 84, we get 5 with a remainder of 60.
The next digit of our result is 5. 
Result so far: 4843.464285
If we take 420 away from 480, we end up with 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Advancing to step 13:
When dividing 600 by 84, we get 7 with a remainder of 12.
Write down 7 as next digit of the result. 
Result so far: 4843.4642857
If we take 588 away from 600, we end up with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Going ahead to step 14:
When dividing 120 by 84, we get 1 with a remainder of 36.
The next digit of our result is 1. 
Result so far: 4843.46428571
If we subtract 84 from 120, we get 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

In conclusion, the division gives 4843.46428571 with a balance of 3.6e-08.