We look at the division of 91957 by 54 
The aim is to understand the frequency of 54 in 91957.

On to step 1:
54 can be fit into 9 0 times, resulting in a remainder of 9.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 9, we get 9.
Take the next digit (1) from the dividend and append it to 9, then repeat: 91 / 54

Advancing to step 2:
54 can be fit into 91 1 times, resulting in a remainder of 37.
The next digit of our result is 1. 
Result so far: 1.0
Subtract 54 from 91 to get 37.
Bring next digit (9) of the dividend behind the 37 and repeat the process: 379 / 54

Step 3:
379 divided by 54 is 7 with a remainder of 1.
The number 7 becomes the next digit in our result. 
Result so far: 17.0
If we take 378 away from 379, we end up with 1.
Append the next digit (5) from the dividend to 1 and continue with: 15 / 54

On to step 4:
54 can be fit into 15 0 times, resulting in a remainder of 15.
Put 0 as the next digit of the answer. 
Result so far: 170.0
Deduct 0 from 15 and we're left with 15.
Bring next digit (7) of the dividend behind the 15 and repeat the process: 157 / 54

Moving on to step 5:
When dividing 157 by 54, we get 2 with a remainder of 49.
Put 2 as the next digit of the answer. 
Result so far: 1702.0
If we take 108 away from 157, we end up with 49.
Since there are no more digits in the dividend, we add a zero to the remainder making it 490, and continue the process.

Step 6:
54 goes into 490 9 times with a remainder of 4.
The number 9 becomes the next digit in our result. 
Result so far: 1702.9
Subtract 486 from 490 to get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Going ahead to step 7:
When dividing 40 by 54, we get 0 with a remainder of 40.
Write down 0 as next digit of the result. 
Result so far: 1702.9
Subtracting 0 from 40 leaves us with 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 8:
400 divided by 54 is 7 with a remainder of 22.
The number 7 becomes the next digit in our result. 
Result so far: 1702.907
Subtract 378 from 400 to 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.

Let's proceed to step 9:
220 divided by 54 is 4 with a remainder of 4.
The next digit of our result is 4. 
Result so far: 1702.9074
If we take 216 away from 220, we end up with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Going ahead to step 10:
40 divided by 54 is 0 with a remainder of 40.
Record the quotient 0 as the next digit in the result. 
Result so far: 1702.9074
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.

Advancing to step 11:
The number 54 fits into 400 7 times, leaving a remainder of 22.
Use 7 as the next digit of our solution. 
Result so far: 1702.907407
Subtracting 378 from 400 leaves us with 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Step 12:
When dividing 220 by 54, we get 4 with a remainder of 4.
Write down 4 as next digit of the result. 
Result so far: 1702.9074074
Subtracting 216 from 220 leaves us with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

On to step 13:
The number 54 fits into 40 0 times, leaving a remainder of 40.
The next digit of our result is 0. 
Result so far: 1702.9074074
Deduct 0 from 40 and we're left with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

The quotient of the division is 1702.9074074, and the remainder is 4e-08.