We look at the division of 83899666 by 596 
The aim is to understand the frequency of 596 in 83899666.

Step 1:
When dividing 8 by 596, we get 0 with a remainder of 8.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Grab the next digit (3) from the dividend, add it to 8, then carry on: 83 / 596

Advancing to step 2:
83 divided by 596 is 0 with a remainder of 83.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 83, we end up with 83.
Bring next digit (8) of the dividend behind the 83 and repeat the process: 838 / 596

Going ahead to step 3:
596 can be fit into 838 1 times, resulting in a remainder of 242.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
If we subtract 596 from 838, we get 242.
Include the next digit (9) from the dividend after 242, then repeat: 2429 / 596

Advancing to step 4:
When dividing 2429 by 596, we get 4 with a remainder of 45.
Put 4 as the next digit of the answer. 
Result so far: 14.0
Deduct 2384 from 2429 and we're left with 45.
Append the next digit (9) from the dividend to 45 and continue with: 459 / 596

Advancing to step 5:
When dividing 459 by 596, we get 0 with a remainder of 459.
The number 0 becomes the next digit in our result. 
Result so far: 140.0
The remainder is 459 after subtracting 0 from 459.
Bring next digit (6) of the dividend behind the 459 and repeat the process: 4596 / 596

Let's proceed to step 6:
If we divide 4596 by 596, we get 7 and a remainder of 424.
The next digit of our result is 7. 
Result so far: 1407.0
The remainder is 424 after subtracting 4172 from 4596.
Fetch the next digit (6) from the dividend, attach it to 424 and continue: 4246 / 596

Advancing to step 7:
4246 divided by 596 is 7 with a remainder of 74.
Use 7 as the next digit of our solution. 
Result so far: 14077.0
If we take 4172 away from 4246, we end up with 74.
Fetch the next digit (6) from the dividend, attach it to 74 and continue: 746 / 596

Step 8:
746 divided by 596 is 1 with a remainder of 150.
Put 1 as the next digit of the answer. 
Result so far: 140771.0
The remainder is 150 after subtracting 596 from 746.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1500, and continue the process.

Advancing to step 9:
When dividing 1500 by 596, we get 2 with a remainder of 308.
Write down 2 as next digit of the result. 
Result so far: 140771.2
Subtracting 1192 from 1500 leaves us with 308.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3080, and continue the process.

Moving on to step 10:
The number 596 fits into 3080 5 times, leaving a remainder of 100.
Use 5 as the next digit of our solution. 
Result so far: 140771.25
Deduct 2980 from 3080 and we're left with 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1000, and continue the process.

Let's proceed to step 11:
596 can be fit into 1000 1 times, resulting in a remainder of 404.
The number 1 becomes the next digit in our result. 
Result so far: 140771.251
If we subtract 596 from 1000, we get 404.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4040, and continue the process.

On to step 12:
596 can be fit into 4040 6 times, resulting in a remainder of 464.
Write down 6 as next digit of the result. 
Result so far: 140771.2516
Deduct 3576 from 4040 and we're left with 464.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4640, and continue the process.

Step 13:
If we divide 4640 by 596, we get 7 and a remainder of 468.
The next digit of our result is 7. 
Result so far: 140771.25167
Subtracting 4172 from 4640 leaves us with 468.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4680, and continue the process.

Going ahead to step 14:
The number 596 fits into 4680 7 times, leaving a remainder of 508.
The number 7 becomes the next digit in our result. 
Result so far: 140771.251677
Deduct 4172 from 4680 and we're left with 508.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5080, and continue the process.

The final outcome is 140771.251677, with a leftover of 5.08e-05.