We look at the division of 931971 by 54 
The aim is to understand the frequency of 54 in 931971.

Step 1:
When dividing 9 by 54, we get 0 with a remainder of 9.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 9 and we're left with 9.
Bring next digit (3) of the dividend behind the 9 and repeat the process: 93 / 54

Moving on to step 2:
54 can be fit into 93 1 times, resulting in a remainder of 39.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
If we take 54 away from 93, we end up with 39.
Fetch the next digit (1) from the dividend, attach it to 39 and continue: 391 / 54

Step 3:
54 goes into 391 7 times with a remainder of 13.
Put 7 as the next digit of the answer. 
Result so far: 17.0
If we take 378 away from 391, we end up with 13.
Include the next digit (9) from the dividend after 13, then repeat: 139 / 54

Advancing to step 4:
139 divided by 54 is 2 with a remainder of 31.
The number 2 becomes the next digit in our result. 
Result so far: 172.0
Subtract 108 from 139 to get 31.
Bring next digit (7) of the dividend behind the 31 and repeat the process: 317 / 54

Let's proceed to step 5:
If we divide 317 by 54, we get 5 and a remainder of 47.
Use 5 as the next digit of our solution. 
Result so far: 1725.0
Subtract 270 from 317 to get 47.
Take the next digit (1) from the dividend and append it to 47, then repeat: 471 / 54

Moving on to step 6:
54 goes into 471 8 times with a remainder of 39.
The next digit of our result is 8. 
Result so far: 17258.0
If we take 432 away from 471, we end up with 39.
Since there are no more digits in the dividend, we add a zero to the remainder making it 390, and continue the process.

Moving on to step 7:
54 goes into 390 7 times with a remainder of 12.
Write down 7 as next digit of the result. 
Result so far: 17258.7
If we take 378 away from 390, we end up with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Going ahead to step 8:
54 goes into 120 2 times with a remainder of 12.
Put 2 as the next digit of the answer. 
Result so far: 17258.72
Subtract 108 from 120 to get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Let's proceed to step 9:
120 divided by 54 is 2 with a remainder of 12.
The number 2 becomes the next digit in our result. 
Result so far: 17258.722
Subtract 108 from 120 to get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

The quotient of the division is 17258.722, and the remainder is 0.0012.