48951891 ÷ 57 
The aim is to understand the frequency of 57 in 48951891.

Let's proceed to step 1:
When dividing 4 by 57, we get 0 with a remainder of 4.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 4 and we're left with 4.
Bring next digit (8) of the dividend behind the 4 and repeat the process: 48 / 57

Going ahead to step 2:
57 goes into 48 0 times with a remainder of 48.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 48, we get 48.
Append the next digit (9) from the dividend to 48 and continue with: 489 / 57

Going ahead to step 3:
489 divided by 57 is 8 with a remainder of 33.
The next digit of our result is 8. 
Result so far: 8.0
Subtracting 456 from 489 leaves us with 33.
Include the next digit (5) from the dividend after 33, then repeat: 335 / 57

Going ahead to step 4:
57 can be fit into 335 5 times, resulting in a remainder of 50.
Put 5 as the next digit of the answer. 
Result so far: 85.0
Subtracting 285 from 335 leaves us with 50.
Take the next digit (1) from the dividend and append it to 50, then repeat: 501 / 57

Step 5:
57 can be fit into 501 8 times, resulting in a remainder of 45.
The next digit of our result is 8. 
Result so far: 858.0
Deduct 456 from 501 and we're left with 45.
Fetch the next digit (8) from the dividend, attach it to 45 and continue: 458 / 57

Moving on to step 6:
If we divide 458 by 57, we get 8 and a remainder of 2.
Record the quotient 8 as the next digit in the result. 
Result so far: 8588.0
Subtract 456 from 458 to get 2.
Bring next digit (9) of the dividend behind the 2 and repeat the process: 29 / 57

Moving on to step 7:
57 can be fit into 29 0 times, resulting in a remainder of 29.
Record the quotient 0 as the next digit in the result. 
Result so far: 85880.0
Subtract 0 from 29 to get 29.
Bring next digit (1) of the dividend behind the 29 and repeat the process: 291 / 57

Step 8:
If we divide 291 by 57, we get 5 and a remainder of 6.
The next digit of our result is 5. 
Result so far: 858805.0
If we take 285 away from 291, we end up with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Advancing to step 9:
57 goes into 60 1 times with a remainder of 3.
The number 1 becomes the next digit in our result. 
Result so far: 858805.1
Subtract 57 from 60 to get 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Advancing to step 10:
57 goes into 30 0 times with a remainder of 30.
The number 0 becomes the next digit in our result. 
Result so far: 858805.1
Subtracting 0 from 30 leaves us with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Going ahead to step 11:
The number 57 fits into 300 5 times, leaving a remainder of 15.
The number 5 becomes the next digit in our result. 
Result so far: 858805.105
Subtract 285 from 300 to get 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Advancing to step 12:
If we divide 150 by 57, we get 2 and a remainder of 36.
The next digit of our result is 2. 
Result so far: 858805.1052
Deduct 114 from 150 and we're left 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 13:
57 goes into 360 6 times with a remainder of 18.
Use 6 as the next digit of our solution. 
Result so far: 858805.10526
Deduct 342 from 360 and we're left 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.

Let's proceed to step 14:
The number 57 fits into 180 3 times, leaving a remainder of 9.
The number 3 becomes the next digit in our result. 
Result so far: 858805.105263
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.

Advancing to step 15:
90 divided by 57 is 1 with a remainder of 33.
Put 1 as the next digit of the answer. 
Result so far: 858805.1052631
If we subtract 57 from 90, we get 33.
Since there are no more digits in the dividend, we add a zero to the remainder making it 330, and continue the process.

Let's proceed to step 16:
57 can be fit into 330 5 times, resulting in a remainder of 45.
The next digit of our result is 5. 
Result so far: 858805.10526315
If we take 285 away from 330, we end up 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.

Our division results in 858805.10526315 with a remaining 4.5e-08.