57485889 ÷ 691 
The aim is to understand the frequency of 691 in 57485889.

Step 1:
5 divided by 691 is 0 with a remainder of 5.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 5 and we're left with 5.
Bring next digit (7) of the dividend behind the 5 and repeat the process: 57 / 691

Advancing to step 2:
If we divide 57 by 691, we get 0 and a remainder of 57.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 57 to get 57.
Take the next digit (4) from the dividend and append it to 57, then repeat: 574 / 691

On to step 3:
When dividing 574 by 691, we get 0 with a remainder of 574.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 574 and we're left with 574.
Bring next digit (8) of the dividend behind the 574 and repeat the process: 5748 / 691

Moving on to step 4:
5748 divided by 691 is 8 with a remainder of 220.
Write down 8 as next digit of the result. 
Result so far: 8.0
The remainder is 220 after subtracting 5528 from 5748.
Append the next digit (5) from the dividend to 220 and continue with: 2205 / 691

Advancing to step 5:
If we divide 2205 by 691, we get 3 and a remainder of 132.
Write down 3 as next digit of the result. 
Result so far: 83.0
The remainder is 132 after subtracting 2073 from 2205.
Grab the next digit (8) from the dividend, add it to 132, then carry on: 1328 / 691

Let's proceed to step 6:
1328 divided by 691 is 1 with a remainder of 637.
Put 1 as the next digit of the answer. 
Result so far: 831.0
If we take 691 away from 1328, we end up with 637.
Take the next digit (8) from the dividend and append it to 637, then repeat: 6378 / 691

Let's proceed to step 7:
691 can be fit into 6378 9 times, resulting in a remainder of 159.
Use 9 as the next digit of our solution. 
Result so far: 8319.0
The remainder is 159 after subtracting 6219 from 6378.
Include the next digit (9) from the dividend after 159, then repeat: 1599 / 691

Let's proceed to step 8:
691 goes into 1599 2 times with a remainder of 217.
The number 2 becomes the next digit in our result. 
Result so far: 83192.0
Subtract 1382 from 1599 to get 217.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2170, and continue the process.

Going ahead to step 9:
2170 divided by 691 is 3 with a remainder of 97.
Write down 3 as next digit of the result. 
Result so far: 83192.3
If we subtract 2073 from 2170, we get 97.
Since there are no more digits in the dividend, we add a zero to the remainder making it 970, and continue the process.

Advancing to step 10:
If we divide 970 by 691, we get 1 and a remainder of 279.
Use 1 as the next digit of our solution. 
Result so far: 83192.31
If we take 691 away from 970, we end up with 279.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2790, and continue the process.

Step 11:
The number 691 fits into 2790 4 times, leaving a remainder of 26.
Put 4 as the next digit of the answer. 
Result so far: 83192.314
If we subtract 2764 from 2790, we get 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

On to step 12:
260 divided by 691 is 0 with a remainder of 260.
Write down 0 as next digit of the result. 
Result so far: 83192.314
Subtract 0 from 260 to get 260.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2600, and continue the process.

Step 13:
If we divide 2600 by 691, we get 3 and a remainder of 527.
The next digit of our result is 3. 
Result so far: 83192.31403
If we subtract 2073 from 2600, we get 527.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5270, and continue the process.

Let's proceed to step 14:
When dividing 5270 by 691, we get 7 with a remainder of 433.
The next digit of our result is 7. 
Result so far: 83192.314037
If we subtract 4837 from 5270, we get 433.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4330, and continue the process.

Advancing to step 15:
4330 divided by 691 is 6 with a remainder of 184.
Write down 6 as next digit of the result. 
Result so far: 83192.3140376
Subtract 4146 from 4330 to get 184.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1840, and continue the process.

Moving on to step 16:
When dividing 1840 by 691, we get 2 with a remainder of 458.
The next digit of our result is 2. 
Result so far: 83192.31403762
Subtracting 1382 from 1840 leaves us with 458.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4580, and continue the process.

The final result is 83192.31403762 with a remainder of 4.58e-07.