We're dividing 13680639 by 867 
The aim is to understand the frequency of 867 in 13680639.

On to step 1:
867 can be fit into 1 0 times, resulting in a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 1 leaves us with 1.
Grab the next digit (3) from the dividend, add it to 1, then carry on: 13 / 867

Moving on to step 2:
If we divide 13 by 867, we get 0 and a remainder of 13.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 13, we end up with 13.
Take the next digit (6) from the dividend and append it to 13, then repeat: 136 / 867

Moving on to step 3:
867 goes into 136 0 times with a remainder of 136.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 136 to get 136.
Take the next digit (8) from the dividend and append it to 136, then repeat: 1368 / 867

Step 4:
867 can be fit into 1368 1 times, resulting in a remainder of 501.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Deduct 867 from 1368 and we're left with 501.
Bring next digit (0) of the dividend behind the 501 and repeat the process: 5010 / 867

Going ahead to step 5:
When dividing 5010 by 867, we get 5 with a remainder of 675.
Use 5 as the next digit of our solution. 
Result so far: 15.0
Deduct 4335 from 5010 and we're left with 675.
Grab the next digit (6) from the dividend, add it to 675, then carry on: 6756 / 867

Step 6:
867 can be fit into 6756 7 times, resulting in a remainder of 687.
Use 7 as the next digit of our solution. 
Result so far: 157.0
Subtract 6069 from 6756 to get 687.
Fetch the next digit (3) from the dividend, attach it to 687 and continue: 6873 / 867

Let's proceed to step 7:
If we divide 6873 by 867, we get 7 and a remainder of 804.
The number 7 becomes the next digit in our result. 
Result so far: 1577.0
Deduct 6069 from 6873 and we're left with 804.
Include the next digit (9) from the dividend after 804, then repeat: 8049 / 867

On to step 8:
867 can be fit into 8049 9 times, resulting in a remainder of 246.
Write down 9 as next digit of the result. 
Result so far: 15779.0
Deduct 7803 from 8049 and we're left with 246.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2460, and continue the process.

Going ahead to step 9:
867 goes into 2460 2 times with a remainder of 726.
The number 2 becomes the next digit in our result. 
Result so far: 15779.2
Subtract 1734 from 2460 to get 726.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7260, and continue the process.

Going ahead to step 10:
The number 867 fits into 7260 8 times, leaving a remainder of 324.
Use 8 as the next digit of our solution. 
Result so far: 15779.28
If we subtract 6936 from 7260, we get 324.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3240, and continue the process.

Going ahead to step 11:
When dividing 3240 by 867, we get 3 with a remainder of 639.
Write down 3 as next digit of the result. 
Result so far: 15779.283
The remainder is 639 after subtracting 2601 from 3240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6390, and continue the process.

On to step 12:
867 goes into 6390 7 times with a remainder of 321.
The next digit of our result is 7. 
Result so far: 15779.2837
Subtracting 6069 from 6390 leaves us with 321.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3210, and continue the process.

Step 13:
867 goes into 3210 3 times with a remainder of 609.
The next digit of our result is 3. 
Result so far: 15779.28373
If we subtract 2601 from 3210, we get 609.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6090, and continue the process.

Moving on to step 14:
867 goes into 6090 7 times with a remainder of 21.
Put 7 as the next digit of the answer. 
Result so far: 15779.283737
If we subtract 6069 from 6090, we get 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Advancing to step 15:
210 divided by 867 is 0 with a remainder of 210.
The next digit of our result is 0. 
Result so far: 15779.283737
The remainder is 210 after subtracting 0 from 210.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2100, and continue the process.

Going ahead to step 16:
2100 divided by 867 is 2 with a remainder of 366.
Put 2 as the next digit of the answer. 
Result so far: 15779.28373702
The remainder is 366 after subtracting 1734 from 2100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3660, and continue the process.

After the division, we end up with 15779.28373702 and a remainder of 3.66e-07.