We look at the division of 640059 by 84 
The aim is to understand the frequency of 84 in 640059.

Going ahead to step 1:
84 goes into 6 0 times with a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 6, we get 6.
Fetch the next digit (4) from the dividend, attach it to 6 and continue: 64 / 84

On to step 2:
If we divide 64 by 84, we get 0 and a remainder of 64.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 64 after subtracting 0 from 64.
Include the next digit (0) from the dividend after 64, then repeat: 640 / 84

Going ahead to step 3:
If we divide 640 by 84, we get 7 and a remainder of 52.
Write down 7 as next digit of the result. 
Result so far: 7.0
If we take 588 away from 640, we end up with 52.
Include the next digit (0) from the dividend after 52, then repeat: 520 / 84

Going ahead to step 4:
84 can be fit into 520 6 times, resulting in a remainder of 16.
Use 6 as the next digit of our solution. 
Result so far: 76.0
Subtract 504 from 520 to get 16.
Append the next digit (5) from the dividend to 16 and continue with: 165 / 84

Advancing to step 5:
165 divided by 84 is 1 with a remainder of 81.
The number 1 becomes the next digit in our result. 
Result so far: 761.0
If we take 84 away from 165, we end up with 81.
Take the next digit (9) from the dividend and append it to 81, then repeat: 819 / 84

On to step 6:
84 can be fit into 819 9 times, resulting in a remainder of 63.
The number 9 becomes the next digit in our result. 
Result so far: 7619.0
The remainder is 63 after subtracting 756 from 819.
Since there are no more digits in the dividend, we add a zero to the remainder making it 630, and continue the process.

Step 7:
84 can be fit into 630 7 times, resulting in a remainder of 42.
Write down 7 as next digit of the result. 
Result so far: 7619.7
Deduct 588 from 630 and we're left with 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

On to step 8:
420 divided by 84 is 5 with a remainder of 0.
Record the quotient 5 as the next digit in the result. 
Result so far: 7619.75
Deduct 420 from 420 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Step 9:
When dividing 0 by 84, we get 0 with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 7619.75
If we subtract 0 from 0, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

On to step 10:
84 goes into 0 0 times with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 7619.75
If we take 0 away from 0, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Our division results in 7619.75 with a remaining 0.0.