83951166 ÷ 689 
The aim is to understand the frequency of 689 in 83951166.

Moving on to step 1:
8 divided by 689 is 0 with a remainder of 8.
Use 0 as the next digit of our solution. 
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 / 689

On to step 2:
The number 689 fits into 83 0 times, leaving a remainder of 83.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 83 and we're left with 83.
Grab the next digit (9) from the dividend, add it to 83, then carry on: 839 / 689

Going ahead to step 3:
The number 689 fits into 839 1 times, leaving a remainder of 150.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Deduct 689 from 839 and we're left with 150.
Grab the next digit (5) from the dividend, add it to 150, then carry on: 1505 / 689

Going ahead to step 4:
The number 689 fits into 1505 2 times, leaving a remainder of 127.
Write down 2 as next digit of the result. 
Result so far: 12.0
If we take 1378 away from 1505, we end up with 127.
Include the next digit (1) from the dividend after 127, then repeat: 1271 / 689

Moving on to step 5:
The number 689 fits into 1271 1 times, leaving a remainder of 582.
Use 1 as the next digit of our solution. 
Result so far: 121.0
If we take 689 away from 1271, we end up with 582.
Take the next digit (1) from the dividend and append it to 582, then repeat: 5821 / 689

Advancing to step 6:
5821 divided by 689 is 8 with a remainder of 309.
Use 8 as the next digit of our solution. 
Result so far: 1218.0
The remainder is 309 after subtracting 5512 from 5821.
Append the next digit (6) from the dividend to 309 and continue with: 3096 / 689

Going ahead to step 7:
689 can be fit into 3096 4 times, resulting in a remainder of 340.
Use 4 as the next digit of our solution. 
Result so far: 12184.0
Deduct 2756 from 3096 and we're left with 340.
Bring next digit (6) of the dividend behind the 340 and repeat the process: 3406 / 689

Going ahead to step 8:
689 can be fit into 3406 4 times, resulting in a remainder of 650.
Write down 4 as next digit of the result. 
Result so far: 121844.0
If we take 2756 away from 3406, we end up with 650.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6500, and continue the process.

Step 9:
The number 689 fits into 6500 9 times, leaving a remainder of 299.
The number 9 becomes the next digit in our result. 
Result so far: 121844.9
If we take 6201 away from 6500, we end up with 299.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2990, and continue the process.

Step 10:
If we divide 2990 by 689, we get 4 and a remainder of 234.
The next digit of our result is 4. 
Result so far: 121844.94
If we subtract 2756 from 2990, we get 234.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2340, and continue the process.

Going ahead to step 11:
If we divide 2340 by 689, we get 3 and a remainder of 273.
Put 3 as the next digit of the answer. 
Result so far: 121844.943
Subtracting 2067 from 2340 leaves us with 273.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2730, and continue the process.

Step 12:
When dividing 2730 by 689, we get 3 with a remainder of 663.
The next digit of our result is 3. 
Result so far: 121844.9433
Subtracting 2067 from 2730 leaves us with 663.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6630, and continue the process.

After the division, we end up with 121844.9433 and a remainder of 0.00663.