991276 ÷ 57 
The aim is to understand the frequency of 57 in 991276.

Let's proceed to step 1:
When dividing 9 by 57, we get 0 with a remainder of 9.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 9, we get 9.
Take the next digit (9) from the dividend and append it to 9, then repeat: 99 / 57

Going ahead to step 2:
57 can be fit into 99 1 times, resulting in a remainder of 42.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Subtracting 57 from 99 leaves us with 42.
Bring next digit (1) of the dividend behind the 42 and repeat the process: 421 / 57

Step 3:
When dividing 421 by 57, we get 7 with a remainder of 22.
Use 7 as the next digit of our solution. 
Result so far: 17.0
If we subtract 399 from 421, we get 22.
Bring next digit (2) of the dividend behind the 22 and repeat the process: 222 / 57

Advancing to step 4:
The number 57 fits into 222 3 times, leaving a remainder of 51.
Put 3 as the next digit of the answer. 
Result so far: 173.0
Subtracting 171 from 222 leaves us with 51.
Take the next digit (7) from the dividend and append it to 51, then repeat: 517 / 57

On to step 5:
57 can be fit into 517 9 times, resulting in a remainder of 4.
Put 9 as the next digit of the answer. 
Result so far: 1739.0
If we take 513 away from 517, we end up with 4.
Include the next digit (6) from the dividend after 4, then repeat: 46 / 57

Let's proceed to step 6:
If we divide 46 by 57, we get 0 and a remainder of 46.
The next digit of our result is 0. 
Result so far: 17390.0
Subtracting 0 from 46 leaves us with 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Going ahead to step 7:
When dividing 460 by 57, we get 8 with a remainder of 4.
Put 8 as the next digit of the answer. 
Result so far: 17390.8
The remainder is 4 after subtracting 456 from 460.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Step 8:
When dividing 40 by 57, we get 0 with a remainder of 40.
Put 0 as the next digit of the answer. 
Result so far: 17390.8
If we subtract 0 from 40, we get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Let's proceed to step 9:
When dividing 400 by 57, we get 7 with a remainder of 1.
Write down 7 as next digit of the result. 
Result so far: 17390.807
Subtracting 399 from 400 leaves us with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Advancing to step 10:
10 divided by 57 is 0 with a remainder of 10.
The number 0 becomes the next digit in our result. 
Result so far: 17390.807
Subtracting 0 from 10 leaves us with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Going ahead to step 11:
If we divide 100 by 57, we get 1 and a remainder of 43.
Write down 1 as next digit of the result. 
Result so far: 17390.80701
Subtract 57 from 100 to get 43.
Since there are no more digits in the dividend, we add a zero to the remainder making it 430, and continue the process.

Going ahead to step 12:
If we divide 430 by 57, we get 7 and a remainder of 31.
Put 7 as the next digit of the answer. 
Result so far: 17390.807017
Subtracting 399 from 430 leaves us with 31.
Since there are no more digits in the dividend, we add a zero to the remainder making it 310, and continue the process.

On to step 13:
310 divided by 57 is 5 with a remainder of 25.
The next digit of our result is 5. 
Result so far: 17390.8070175
If we subtract 285 from 310, we get 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Advancing to step 14:
If we divide 250 by 57, we get 4 and a remainder of 22.
Record the quotient 4 as the next digit in the result. 
Result so far: 17390.80701754
If we subtract 228 from 250, we get 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

In conclusion, the division gives 17390.80701754 with a balance of 2.2e-08.