57140431 ÷ 689 
The aim is to understand the frequency of 689 in 57140431.

On to step 1:
If we divide 5 by 689, we get 0 and a remainder of 5.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 5 leaves us with 5.
Include the next digit (7) from the dividend after 5, then repeat: 57 / 689

Going ahead to step 2:
689 goes into 57 0 times with a remainder of 57.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 57 and we're left with 57.
Append the next digit (1) from the dividend to 57 and continue with: 571 / 689

Advancing to step 3:
When dividing 571 by 689, we get 0 with a remainder of 571.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 571 to get 571.
Bring next digit (4) of the dividend behind the 571 and repeat the process: 5714 / 689

Advancing to step 4:
The number 689 fits into 5714 8 times, leaving a remainder of 202.
Put 8 as the next digit of the answer. 
Result so far: 8.0
Subtract 5512 from 5714 to get 202.
Bring next digit (0) of the dividend behind the 202 and repeat the process: 2020 / 689

Moving on to step 5:
689 goes into 2020 2 times with a remainder of 642.
Write down 2 as next digit of the result. 
Result so far: 82.0
Subtract 1378 from 2020 to get 642.
Bring next digit (4) of the dividend behind the 642 and repeat the process: 6424 / 689

On to step 6:
If we divide 6424 by 689, we get 9 and a remainder of 223.
Record the quotient 9 as the next digit in the result. 
Result so far: 829.0
Subtract 6201 from 6424 to get 223.
Grab the next digit (3) from the dividend, add it to 223, then carry on: 2233 / 689

Step 7:
689 can be fit into 2233 3 times, resulting in a remainder of 166.
Put 3 as the next digit of the answer. 
Result so far: 8293.0
If we subtract 2067 from 2233, we get 166.
Fetch the next digit (1) from the dividend, attach it to 166 and continue: 1661 / 689

Going ahead to step 8:
1661 divided by 689 is 2 with a remainder of 283.
Put 2 as the next digit of the answer. 
Result so far: 82932.0
Subtracting 1378 from 1661 leaves us with 283.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2830, and continue the process.

Step 9:
When dividing 2830 by 689, we get 4 with a remainder of 74.
The next digit of our result is 4. 
Result so far: 82932.4
If we subtract 2756 from 2830, we get 74.
Since there are no more digits in the dividend, we add a zero to the remainder making it 740, and continue the process.

Step 10:
The number 689 fits into 740 1 times, leaving a remainder of 51.
Use 1 as the next digit of our solution. 
Result so far: 82932.41
If we subtract 689 from 740, we get 51.
Since there are no more digits in the dividend, we add a zero to the remainder making it 510, and continue the process.

Advancing to step 11:
The number 689 fits into 510 0 times, leaving a remainder of 510.
Put 0 as the next digit of the answer. 
Result so far: 82932.41
If we take 0 away from 510, we end up with 510.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5100, and continue the process.

Advancing to step 12:
5100 divided by 689 is 7 with a remainder of 277.
Use 7 as the next digit of our solution. 
Result so far: 82932.4107
Deduct 4823 from 5100 and we're left with 277.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2770, and continue the process.

Advancing to step 13:
When dividing 2770 by 689, we get 4 with a remainder of 14.
Use 4 as the next digit of our solution. 
Result so far: 82932.41074
Subtracting 2756 from 2770 leaves us with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Step 14:
If we divide 140 by 689, we get 0 and a remainder of 140.
The number 0 becomes the next digit in our result. 
Result so far: 82932.41074
If we subtract 0 from 140, we get 140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1400, and continue the process.

Moving on to step 15:
689 goes into 1400 2 times with a remainder of 22.
Put 2 as the next digit of the answer. 
Result so far: 82932.4107402
The remainder is 22 after subtracting 1378 from 1400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Step 16:
220 divided by 689 is 0 with a remainder of 220.
Use 0 as the next digit of our solution. 
Result so far: 82932.4107402
Deduct 0 from 220 and we're left with 220.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2200, and continue the process.

The final result is 82932.4107402 with a remainder of 2.2e-07.