678535 divided by 83 
The aim is to understand the frequency of 83 in 678535.

Step 1:
The number 83 fits into 6 0 times, leaving a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 6 leaves us with 6.
Bring next digit (7) of the dividend behind the 6 and repeat the process: 67 / 83

Let's proceed to step 2:
If we divide 67 by 83, we get 0 and a remainder of 67.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 67 and we're left with 67.
Fetch the next digit (8) from the dividend, attach it to 67 and continue: 678 / 83

Step 3:
83 can be fit into 678 8 times, resulting in a remainder of 14.
The next digit of our result is 8. 
Result so far: 8.0
The remainder is 14 after subtracting 664 from 678.
Append the next digit (5) from the dividend to 14 and continue with: 145 / 83

Moving on to step 4:
When dividing 145 by 83, we get 1 with a remainder of 62.
The next digit of our result is 1. 
Result so far: 81.0
Subtracting 83 from 145 leaves us with 62.
Append the next digit (3) from the dividend to 62 and continue with: 623 / 83

On to step 5:
83 can be fit into 623 7 times, resulting in a remainder of 42.
The number 7 becomes the next digit in our result. 
Result so far: 817.0
If we take 581 away from 623, we end up with 42.
Append the next digit (5) from the dividend to 42 and continue with: 425 / 83

Step 6:
83 goes into 425 5 times with a remainder of 10.
Write down 5 as next digit of the result. 
Result so far: 8175.0
Subtracting 415 from 425 leaves us with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Step 7:
100 divided by 83 is 1 with a remainder of 17.
Write down 1 as next digit of the result. 
Result so far: 8175.1
Deduct 83 from 100 and we're left with 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

On to step 8:
83 can be fit into 170 2 times, resulting in a remainder of 4.
Write down 2 as next digit of the result. 
Result so far: 8175.12
Subtracting 166 from 170 leaves us 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.

Moving on to step 9:
83 can be fit into 40 0 times, resulting in a remainder of 40.
The number 0 becomes the next digit in our result. 
Result so far: 8175.12
Subtracting 0 from 40 leaves us with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Step 10:
When dividing 400 by 83, we get 4 with a remainder of 68.
Record the quotient 4 as the next digit in the result. 
Result so far: 8175.1204
Deduct 332 from 400 and we're left with 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 11:
If we divide 680 by 83, we get 8 and a remainder of 16.
Put 8 as the next digit of the answer. 
Result so far: 8175.12048
Deduct 664 from 680 and we're left with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Going ahead to step 12:
83 goes into 160 1 times with a remainder of 77.
The number 1 becomes the next digit in our result. 
Result so far: 8175.120481
Deduct 83 from 160 and we're left with 77.
Since there are no more digits in the dividend, we add a zero to the remainder making it 770, and continue the process.

Moving on to step 13:
770 divided by 83 is 9 with a remainder of 23.
The number 9 becomes the next digit in our result. 
Result so far: 8175.1204819
The remainder is 23 after subtracting 747 from 770.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

On to step 14:
If we divide 230 by 83, we get 2 and a remainder of 64.
Record the quotient 2 as the next digit in the result. 
Result so far: 8175.12048192
Subtracting 166 from 230 leaves us with 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

The final outcome is 8175.12048192, with a leftover of 6.4e-08.