We look at the division of 15806 by 54 
The aim is to understand the frequency of 54 in 15806.

Step 1:
The number 54 fits into 1 0 times, leaving a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 1 leaves us with 1.
Bring next digit (5) of the dividend behind the 1 and repeat the process: 15 / 54

Let's proceed to step 2:
The number 54 fits into 15 0 times, leaving a remainder of 15.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 15 leaves us with 15.
Fetch the next digit (8) from the dividend, attach it to 15 and continue: 158 / 54

Step 3:
54 can be fit into 158 2 times, resulting in a remainder of 50.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
The remainder is 50 after subtracting 108 from 158.
Fetch the next digit (0) from the dividend, attach it to 50 and continue: 500 / 54

On to step 4:
54 goes into 500 9 times with a remainder of 14.
Record the quotient 9 as the next digit in the result. 
Result so far: 29.0
Subtract 486 from 500 to get 14.
Bring next digit (6) of the dividend behind the 14 and repeat the process: 146 / 54

Going ahead to step 5:
54 goes into 146 2 times with a remainder of 38.
Write down 2 as next digit of the result. 
Result so far: 292.0
Subtract 108 from 146 to get 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Going ahead to step 6:
The number 54 fits into 380 7 times, leaving a remainder of 2.
Use 7 as the next digit of our solution. 
Result so far: 292.7
If we subtract 378 from 380, we get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Going ahead to step 7:
54 can be fit into 20 0 times, resulting in a remainder of 20.
The next digit of our result is 0. 
Result so far: 292.7
The remainder is 20 after subtracting 0 from 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Advancing to step 8:
200 divided by 54 is 3 with a remainder of 38.
The number 3 becomes the next digit in our result. 
Result so far: 292.703
The remainder is 38 after subtracting 162 from 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Advancing to step 9:
54 goes into 380 7 times with a remainder of 2.
The next digit of our result is 7. 
Result so far: 292.7037
Subtracting 378 from 380 leaves us with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Advancing to step 10:
20 divided by 54 is 0 with a remainder of 20.
Record the quotient 0 as the next digit in the result. 
Result so far: 292.7037
If we subtract 0 from 20, we get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Let's proceed to step 11:
200 divided by 54 is 3 with a remainder of 38.
Write down 3 as next digit of the result. 
Result so far: 292.703703
Subtract 162 from 200 to get 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Let's proceed to step 12:
54 goes into 380 7 times with a remainder of 2.
Record the quotient 7 as the next digit in the result. 
Result so far: 292.7037037
If we subtract 378 from 380, we get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

On to step 13:
54 can be fit into 20 0 times, resulting in a remainder of 20.
Write down 0 as next digit of the result. 
Result so far: 292.7037037
Subtracting 0 from 20 leaves us with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Our division results in 292.7037037 with a remaining 2e-08.