We look at the division of 405508 by 54 
The aim is to understand the frequency of 54 in 405508.

Step 1:
4 divided by 54 is 0 with a remainder of 4.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 4 leaves us with 4.
Include the next digit (0) from the dividend after 4, then repeat: 40 / 54

Advancing to step 2:
54 goes into 40 0 times with a remainder of 40.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 40 to get 40.
Grab the next digit (5) from the dividend, add it to 40, then carry on: 405 / 54

Let's proceed to step 3:
54 can be fit into 405 7 times, resulting in a remainder of 27.
The next digit of our result is 7. 
Result so far: 7.0
The remainder is 27 after subtracting 378 from 405.
Grab the next digit (5) from the dividend, add it to 27, then carry on: 275 / 54

Let's proceed to step 4:
54 can be fit into 275 5 times, resulting in a remainder of 5.
Put 5 as the next digit of the answer. 
Result so far: 75.0
If we subtract 270 from 275, we get 5.
Fetch the next digit (0) from the dividend, attach it to 5 and continue: 50 / 54

Going ahead to step 5:
54 can be fit into 50 0 times, resulting in a remainder of 50.
Write down 0 as next digit of the result. 
Result so far: 750.0
If we subtract 0 from 50, we get 50.
Include the next digit (8) from the dividend after 50, then repeat: 508 / 54

Step 6:
If we divide 508 by 54, we get 9 and a remainder of 22.
The next digit of our result is 9. 
Result so far: 7509.0
If we subtract 486 from 508, 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.

Going ahead to step 7:
When dividing 220 by 54, we get 4 with a remainder of 4.
Use 4 as the next digit of our solution. 
Result so far: 7509.4
Deduct 216 from 220 and we're left 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 8:
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: 7509.4
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.

On to step 9:
54 goes into 400 7 times with a remainder of 22.
Write down 7 as next digit of the result. 
Result so far: 7509.407
If we subtract 378 from 400, 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.

On to step 10:
220 divided by 54 is 4 with a remainder of 4.
The number 4 becomes the next digit in our result. 
Result so far: 7509.4074
The remainder is 4 after subtracting 216 from 220.
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 11:
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: 7509.4074
The remainder is 40 after subtracting 0 from 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Step 12:
The number 54 fits into 400 7 times, leaving a remainder of 22.
Record the quotient 7 as the next digit in the result. 
Result so far: 7509.407407
The remainder is 22 after subtracting 378 from 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Advancing to step 13:
If we divide 220 by 54, we get 4 and a remainder of 4.
Write down 4 as next digit of the result. 
Result so far: 7509.4074074
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 14:
40 divided by 54 is 0 with a remainder of 40.
Write down 0 as next digit of the result. 
Result so far: 7509.4074074
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.

In conclusion, the division gives 7509.4074074 with a balance of 4e-08.