83647135 ÷ 680 
The aim is to understand the frequency of 680 in 83647135.

On to step 1:
The number 680 fits into 8 0 times, leaving a remainder of 8.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 8 to get 8.
Take the next digit (3) from the dividend and append it to 8, then repeat: 83 / 680

Advancing to step 2:
If we divide 83 by 680, we get 0 and a remainder of 83.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 83 and we're left with 83.
Append the next digit (6) from the dividend to 83 and continue with: 836 / 680

Moving on to step 3:
836 divided by 680 is 1 with a remainder of 156.
The next digit of our result is 1. 
Result so far: 1.0
Deduct 680 from 836 and we're left with 156.
Append the next digit (4) from the dividend to 156 and continue with: 1564 / 680

Step 4:
The number 680 fits into 1564 2 times, leaving a remainder of 204.
The number 2 becomes the next digit in our result. 
Result so far: 12.0
The remainder is 204 after subtracting 1360 from 1564.
Bring next digit (7) of the dividend behind the 204 and repeat the process: 2047 / 680

Going ahead to step 5:
The number 680 fits into 2047 3 times, leaving a remainder of 7.
Write down 3 as next digit of the result. 
Result so far: 123.0
Deduct 2040 from 2047 and we're left with 7.
Bring next digit (1) of the dividend behind the 7 and repeat the process: 71 / 680

Going ahead to step 6:
The number 680 fits into 71 0 times, leaving a remainder of 71.
The next digit of our result is 0. 
Result so far: 1230.0
If we take 0 away from 71, we end up with 71.
Fetch the next digit (3) from the dividend, attach it to 71 and continue: 713 / 680

Going ahead to step 7:
680 can be fit into 713 1 times, resulting in a remainder of 33.
Record the quotient 1 as the next digit in the result. 
Result so far: 12301.0
Deduct 680 from 713 and we're left with 33.
Fetch the next digit (5) from the dividend, attach it to 33 and continue: 335 / 680

Let's proceed to step 8:
335 divided by 680 is 0 with a remainder of 335.
The next digit of our result is 0. 
Result so far: 123010.0
If we take 0 away from 335, we end up with 335.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3350, and continue the process.

Moving on to step 9:
680 can be fit into 3350 4 times, resulting in a remainder of 630.
Record the quotient 4 as the next digit in the result. 
Result so far: 123010.4
The remainder is 630 after subtracting 2720 from 3350.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6300, and continue the process.

Advancing to step 10:
680 goes into 6300 9 times with a remainder of 180.
Put 9 as the next digit of the answer. 
Result so far: 123010.49
If we subtract 6120 from 6300, we get 180.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1800, and continue the process.

Advancing to step 11:
The number 680 fits into 1800 2 times, leaving a remainder of 440.
Write down 2 as next digit of the result. 
Result so far: 123010.492
The remainder is 440 after subtracting 1360 from 1800.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4400, and continue the process.

Advancing to step 12:
When dividing 4400 by 680, we get 6 with a remainder of 320.
The number 6 becomes the next digit in our result. 
Result so far: 123010.4926
If we take 4080 away from 4400, we end up with 320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3200, and continue the process.

Step 13:
If we divide 3200 by 680, we get 4 and a remainder of 480.
Record the quotient 4 as the next digit in the result. 
Result so far: 123010.49264
Subtract 2720 from 3200 to get 480.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4800, and continue the process.

Moving on to step 14:
680 can be fit into 4800 7 times, resulting in a remainder of 40.
Put 7 as the next digit of the answer. 
Result so far: 123010.492647
Deduct 4760 from 4800 and we're left 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.

Advancing to step 15:
680 goes into 400 0 times with a remainder of 400.
Use 0 as the next digit of our solution. 
Result so far: 123010.492647
Deduct 0 from 400 and we're left with 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4000, and continue the process.

Let's proceed to step 16:
680 can be fit into 4000 5 times, resulting in a remainder of 600.
Use 5 as the next digit of our solution. 
Result so far: 123010.49264705
Subtract 3400 from 4000 to get 600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6000, and continue the process.

The final outcome is 123010.49264705, with a leftover of 6e-07.