396517 divided by 54 
The aim is to understand the frequency of 54 in 396517.

Moving on to step 1:
The number 54 fits into 3 0 times, leaving a remainder of 3.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 3 leaves us with 3.
Take the next digit (9) from the dividend and append it to 3, then repeat: 39 / 54

Advancing to step 2:
54 can be fit into 39 0 times, resulting in a remainder of 39.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 39 after subtracting 0 from 39.
Fetch the next digit (6) from the dividend, attach it to 39 and continue: 396 / 54

Let's proceed to step 3:
The number 54 fits into 396 7 times, leaving a remainder of 18.
Write down 7 as next digit of the result. 
Result so far: 7.0
If we subtract 378 from 396, we get 18.
Grab the next digit (5) from the dividend, add it to 18, then carry on: 185 / 54

Step 4:
When dividing 185 by 54, we get 3 with a remainder of 23.
Put 3 as the next digit of the answer. 
Result so far: 73.0
If we take 162 away from 185, we end up with 23.
Fetch the next digit (1) from the dividend, attach it to 23 and continue: 231 / 54

Step 5:
The number 54 fits into 231 4 times, leaving a remainder of 15.
Put 4 as the next digit of the answer. 
Result so far: 734.0
If we subtract 216 from 231, we get 15.
Fetch the next digit (7) from the dividend, attach it to 15 and continue: 157 / 54

Moving on to step 6:
The number 54 fits into 157 2 times, leaving a remainder of 49.
The next digit of our result is 2. 
Result so far: 7342.0
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.

Moving on to step 7:
The number 54 fits into 490 9 times, leaving a remainder of 4.
Use 9 as the next digit of our solution. 
Result so far: 7342.9
If we take 486 away from 490, 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.

Step 8:
When dividing 40 by 54, we get 0 with a remainder of 40.
Put 0 as the next digit of the answer. 
Result so far: 7342.9
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.

Going ahead to step 9:
54 goes into 400 7 times with a remainder of 22.
The next digit of our result is 7. 
Result so far: 7342.907
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.

On to step 10:
54 goes into 220 4 times with a remainder of 4.
Record the quotient 4 as the next digit in the result. 
Result so far: 7342.9074
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.

Advancing to step 11:
When dividing 40 by 54, we get 0 with a remainder of 40.
Record the quotient 0 as the next digit in the result. 
Result so far: 7342.9074
Subtract 0 from 40 to 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 12:
The number 54 fits into 400 7 times, leaving a remainder of 22.
Put 7 as the next digit of the answer. 
Result so far: 7342.907407
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 13:
220 divided by 54 is 4 with a remainder of 4.
Put 4 as the next digit of the answer. 
Result so far: 7342.9074074
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.

Moving on to step 14:
If we divide 40 by 54, we get 0 and a remainder of 40.
Use 0 as the next digit of our solution. 
Result so far: 7342.9074074
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 final outcome is 7342.9074074, with a leftover of 4e-08.