We're dividing 12883637 by 669 
The aim is to understand the frequency of 669 in 12883637.

Advancing to step 1:
When dividing 1 by 669, we get 0 with a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 1 and we're left with 1.
Append the next digit (2) from the dividend to 1 and continue with: 12 / 669

Let's proceed to step 2:
If we divide 12 by 669, we get 0 and a remainder of 12.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 12, we get 12.
Fetch the next digit (8) from the dividend, attach it to 12 and continue: 128 / 669

On to step 3:
669 can be fit into 128 0 times, resulting in a remainder of 128.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 128 and we're left with 128.
Grab the next digit (8) from the dividend, add it to 128, then carry on: 1288 / 669

Going ahead to step 4:
If we divide 1288 by 669, we get 1 and a remainder of 619.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Subtracting 669 from 1288 leaves us with 619.
Fetch the next digit (3) from the dividend, attach it to 619 and continue: 6193 / 669

Moving on to step 5:
When dividing 6193 by 669, we get 9 with a remainder of 172.
Write down 9 as next digit of the result. 
Result so far: 19.0
If we subtract 6021 from 6193, we get 172.
Include the next digit (6) from the dividend after 172, then repeat: 1726 / 669

Step 6:
The number 669 fits into 1726 2 times, leaving a remainder of 388.
The next digit of our result is 2. 
Result so far: 192.0
Subtracting 1338 from 1726 leaves us with 388.
Grab the next digit (3) from the dividend, add it to 388, then carry on: 3883 / 669

Step 7:
The number 669 fits into 3883 5 times, leaving a remainder of 538.
Write down 5 as next digit of the result. 
Result so far: 1925.0
The remainder is 538 after subtracting 3345 from 3883.
Grab the next digit (7) from the dividend, add it to 538, then carry on: 5387 / 669

Advancing to step 8:
669 can be fit into 5387 8 times, resulting in a remainder of 35.
The next digit of our result is 8. 
Result so far: 19258.0
If we subtract 5352 from 5387, we get 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Advancing to step 9:
The number 669 fits into 350 0 times, leaving a remainder of 350.
Write down 0 as next digit of the result. 
Result so far: 19258.0
If we subtract 0 from 350, we get 350.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3500, and continue the process.

Advancing to step 10:
When dividing 3500 by 669, we get 5 with a remainder of 155.
The number 5 becomes the next digit in our result. 
Result so far: 19258.05
If we subtract 3345 from 3500, we get 155.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1550, and continue the process.

Advancing to step 11:
669 can be fit into 1550 2 times, resulting in a remainder of 212.
Write down 2 as next digit of the result. 
Result so far: 19258.052
Deduct 1338 from 1550 and we're left with 212.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2120, and continue the process.

Let's proceed to step 12:
If we divide 2120 by 669, we get 3 and a remainder of 113.
Use 3 as the next digit of our solution. 
Result so far: 19258.0523
Deduct 2007 from 2120 and we're left with 113.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1130, and continue the process.

Moving on to step 13:
The number 669 fits into 1130 1 times, leaving a remainder of 461.
The number 1 becomes the next digit in our result. 
Result so far: 19258.05231
Subtracting 669 from 1130 leaves us with 461.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4610, and continue the process.

Step 14:
The number 669 fits into 4610 6 times, leaving a remainder of 596.
Put 6 as the next digit of the answer. 
Result so far: 19258.052316
The remainder is 596 after subtracting 4014 from 4610.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5960, and continue the process.

Advancing to step 15:
When dividing 5960 by 669, we get 8 with a remainder of 608.
The next digit of our result is 8. 
Result so far: 19258.0523168
If we take 5352 away from 5960, we end up with 608.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6080, and continue the process.

Step 16:
The number 669 fits into 6080 9 times, leaving a remainder of 59.
The next digit of our result is 9. 
Result so far: 19258.05231689
The remainder is 59 after subtracting 6021 from 6080.
Since there are no more digits in the dividend, we add a zero to the remainder making it 590, and continue the process.

The final result is 19258.05231689 with a remainder of 5.9e-08.