687537 ÷ 83 
The aim is to understand the frequency of 83 in 687537.

Step 1:
When dividing 6 by 83, we get 0 with a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 6 to get 6.
Fetch the next digit (8) from the dividend, attach it to 6 and continue: 68 / 83

Advancing to step 2:
68 divided by 83 is 0 with a remainder of 68.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 68 and we're left with 68.
Append the next digit (7) from the dividend to 68 and continue with: 687 / 83

Let's proceed to step 3:
If we divide 687 by 83, we get 8 and a remainder of 23.
The number 8 becomes the next digit in our result. 
Result so far: 8.0
If we subtract 664 from 687, we get 23.
Take the next digit (5) from the dividend and append it to 23, then repeat: 235 / 83

Step 4:
83 can be fit into 235 2 times, resulting in a remainder of 69.
Record the quotient 2 as the next digit in the result. 
Result so far: 82.0
Deduct 166 from 235 and we're left with 69.
Append the next digit (3) from the dividend to 69 and continue with: 693 / 83

Going ahead to step 5:
83 can be fit into 693 8 times, resulting in a remainder of 29.
Put 8 as the next digit of the answer. 
Result so far: 828.0
If we take 664 away from 693, we end up with 29.
Take the next digit (7) from the dividend and append it to 29, then repeat: 297 / 83

Going ahead to step 6:
When dividing 297 by 83, we get 3 with a remainder of 48.
Put 3 as the next digit of the answer. 
Result so far: 8283.0
If we subtract 249 from 297, 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.

Going ahead to step 7:
83 can be fit into 480 5 times, resulting in a remainder of 65.
Record the quotient 5 as the next digit in the result. 
Result so far: 8283.5
The remainder is 65 after subtracting 415 from 480.
Since there are no more digits in the dividend, we add a zero to the remainder making it 650, and continue the process.

Step 8:
83 goes into 650 7 times with a remainder of 69.
Record the quotient 7 as the next digit in the result. 
Result so far: 8283.57
The remainder is 69 after subtracting 581 from 650.
Since there are no more digits in the dividend, we add a zero to the remainder making it 690, and continue the process.

Advancing to step 9:
When dividing 690 by 83, we get 8 with a remainder of 26.
The next digit of our result is 8. 
Result so far: 8283.578
Subtract 664 from 690 to get 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Going ahead to step 10:
When dividing 260 by 83, we get 3 with a remainder of 11.
Write down 3 as next digit of the result. 
Result so far: 8283.5783
If we subtract 249 from 260, we get 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Going ahead to step 11:
110 divided by 83 is 1 with a remainder of 27.
Put 1 as the next digit of the answer. 
Result so far: 8283.57831
Subtracting 83 from 110 leaves us with 27.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

Advancing to step 12:
270 divided by 83 is 3 with a remainder of 21.
Write down 3 as next digit of the result. 
Result so far: 8283.578313
Subtracting 249 from 270 leaves us with 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

On to step 13:
83 can be fit into 210 2 times, resulting in a remainder of 44.
Use 2 as the next digit of our solution. 
Result so far: 8283.5783132
If we take 166 away from 210, 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 14:
When dividing 440 by 83, we get 5 with a remainder of 25.
Put 5 as the next digit of the answer. 
Result so far: 8283.57831325
The remainder is 25 after subtracting 415 from 440.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

The final outcome is 8283.57831325, with a leftover of 2.5e-08.