109191 divided by 57 
The aim is to understand the frequency of 57 in 109191.

On to step 1:
1 divided by 57 is 0 with a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 1 and we're left with 1.
Bring next digit (0) of the dividend behind the 1 and repeat the process: 10 / 57

Advancing to step 2:
57 goes into 10 0 times with a remainder of 10.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 10, we end up with 10.
Bring next digit (9) of the dividend behind the 10 and repeat the process: 109 / 57

Going ahead to step 3:
The number 57 fits into 109 1 times, leaving a remainder of 52.
Write down 1 as next digit of the result. 
Result so far: 1.0
Deduct 57 from 109 and we're left with 52.
Fetch the next digit (1) from the dividend, attach it to 52 and continue: 521 / 57

Step 4:
57 goes into 521 9 times with a remainder of 8.
Use 9 as the next digit of our solution. 
Result so far: 19.0
Subtract 513 from 521 to get 8.
Take the next digit (9) from the dividend and append it to 8, then repeat: 89 / 57

On to step 5:
The number 57 fits into 89 1 times, leaving a remainder of 32.
The number 1 becomes the next digit in our result. 
Result so far: 191.0
Subtracting 57 from 89 leaves us with 32.
Grab the next digit (1) from the dividend, add it to 32, then carry on: 321 / 57

On to step 6:
321 divided by 57 is 5 with a remainder of 36.
Use 5 as the next digit of our solution. 
Result so far: 1915.0
Subtracting 285 from 321 leaves us with 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Going ahead to step 7:
57 can be fit into 360 6 times, resulting in a remainder of 18.
Put 6 as the next digit of the answer. 
Result so far: 1915.6
Subtracting 342 from 360 leaves us with 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Step 8:
57 goes into 180 3 times with a remainder of 9.
Put 3 as the next digit of the answer. 
Result so far: 1915.63
Subtracting 171 from 180 leaves us with 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Let's proceed to step 9:
The number 57 fits into 90 1 times, leaving a remainder of 33.
Write down 1 as next digit of the result. 
Result so far: 1915.631
If we take 57 away from 90, we end up with 33.
Since there are no more digits in the dividend, we add a zero to the remainder making it 330, and continue the process.

Advancing to step 10:
The number 57 fits into 330 5 times, leaving a remainder of 45.
Use 5 as the next digit of our solution. 
Result so far: 1915.6315
Deduct 285 from 330 and we're left with 45.
Since there are no more digits in the dividend, we add a zero to the remainder making it 450, and continue the process.

Let's proceed to step 11:
The number 57 fits into 450 7 times, leaving a remainder of 51.
Write down 7 as next digit of the result. 
Result so far: 1915.63157
If we take 399 away from 450, we end up with 51.
Since there are no more digits in the dividend, we add a zero to the remainder making it 510, and continue the process.

Going ahead to step 12:
When dividing 510 by 57, we get 8 with a remainder of 54.
Put 8 as the next digit of the answer. 
Result so far: 1915.631578
Subtracting 456 from 510 leaves us with 54.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

Let's proceed to step 13:
When dividing 540 by 57, we get 9 with a remainder of 27.
Record the quotient 9 as the next digit in the result. 
Result so far: 1915.6315789
Deduct 513 from 540 and we're left with 27.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

On to step 14:
57 goes into 270 4 times with a remainder of 42.
Use 4 as the next digit of our solution. 
Result so far: 1915.63157894
If we take 228 away from 270, we end up with 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

After the division, we end up with 1915.63157894 and a remainder of 4.2e-08.