We divide 678528 by 84
The aim is to understand the frequency of 84 in 678528.

On to step 1:
84 goes into 6 0 times with a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 6 leaves us with 6.
Grab the next digit (7) from the dividend, add it to 6, then carry on: 67 / 84

Advancing to step 2:
67 divided by 84 is 0 with a remainder of 67.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 67, we get 67.
Include the next digit (8) from the dividend after 67, then repeat: 678 / 84

Step 3:
84 can be fit into 678 8 times, resulting in a remainder of 6.
Record the quotient 8 as the next digit in the result. 
Result so far: 8.0
If we take 672 away from 678, we end up with 6.
Fetch the next digit (5) from the dividend, attach it to 6 and continue: 65 / 84

Advancing to step 4:
84 goes into 65 0 times with a remainder of 65.
Put 0 as the next digit of the answer. 
Result so far: 80.0
If we take 0 away from 65, we end up with 65.
Take the next digit (2) from the dividend and append it to 65, then repeat: 652 / 84

On to step 5:
When dividing 652 by 84, we get 7 with a remainder of 64.
The next digit of our result is 7. 
Result so far: 807.0
Subtracting 588 from 652 leaves us with 64.
Append the next digit (8) from the dividend to 64 and continue with: 648 / 84

Step 6:
648 divided by 84 is 7 with a remainder of 60.
Use 7 as the next digit of our solution. 
Result so far: 8077.0
If we take 588 away from 648, 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.

On to step 7:
84 goes into 600 7 times with a remainder of 12.
Use 7 as the next digit of our solution. 
Result so far: 8077.7
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.

Step 8:
84 can be fit into 120 1 times, resulting in a remainder of 36.
Use 1 as the next digit of our solution. 
Result so far: 8077.71
If we take 84 away from 120, 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.

Let's proceed to step 9:
If we divide 360 by 84, we get 4 and a remainder of 24.
The next digit of our result is 4. 
Result so far: 8077.714
Subtracting 336 from 360 leaves us with 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Step 10:
When dividing 240 by 84, we get 2 with a remainder of 72.
Record the quotient 2 as the next digit in the result. 
Result so far: 8077.7142
Subtracting 168 from 240 leaves us 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.

Advancing to step 11:
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: 8077.71428
Deduct 672 from 720 and we're left with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Step 12:
When dividing 480 by 84, we get 5 with a remainder of 60.
Put 5 as the next digit of the answer. 
Result so far: 8077.714285
Subtracting 420 from 480 leaves us 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.

On to step 13:
If we divide 600 by 84, we get 7 and a remainder of 12.
Write down 7 as next digit of the result. 
Result so far: 8077.7142857
If we subtract 588 from 600, we get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Step 14:
120 divided by 84 is 1 with a remainder of 36.
Put 1 as the next digit of the answer. 
Result so far: 8077.71428571
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.

After the division, we end up with 8077.71428571 and a remainder of 3.6e-08.