191309 ÷ 54 
The aim is to understand the frequency of 54 in 191309.

Step 1:
If we divide 1 by 54, we get 0 and a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 1, we get 1.
Grab the next digit (9) from the dividend, add it to 1, then carry on: 19 / 54

Advancing to step 2:
The number 54 fits into 19 0 times, leaving a remainder of 19.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 19 and we're left with 19.
Append the next digit (1) from the dividend to 19 and continue with: 191 / 54

On to step 3:
54 can be fit into 191 3 times, resulting in a remainder of 29.
Write down 3 as next digit of the result. 
Result so far: 3.0
Subtract 162 from 191 to get 29.
Bring next digit (3) of the dividend behind the 29 and repeat the process: 293 / 54

Step 4:
When dividing 293 by 54, we get 5 with a remainder of 23.
Use 5 as the next digit of our solution. 
Result so far: 35.0
Subtracting 270 from 293 leaves us with 23.
Take the next digit (0) from the dividend and append it to 23, then repeat: 230 / 54

Advancing to step 5:
If we divide 230 by 54, we get 4 and a remainder of 14.
Record the quotient 4 as the next digit in the result. 
Result so far: 354.0
Deduct 216 from 230 and we're left with 14.
Take the next digit (9) from the dividend and append it to 14, then repeat: 149 / 54

Let's proceed to step 6:
54 goes into 149 2 times with a remainder of 41.
Record the quotient 2 as the next digit in the result. 
Result so far: 3542.0
The remainder is 41 after subtracting 108 from 149.
Since there are no more digits in the dividend, we add a zero to the remainder making it 410, and continue the process.

Step 7:
When dividing 410 by 54, we get 7 with a remainder of 32.
Put 7 as the next digit of the answer. 
Result so far: 3542.7
The remainder is 32 after subtracting 378 from 410.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Advancing to step 8:
54 can be fit into 320 5 times, resulting in a remainder of 50.
Use 5 as the next digit of our solution. 
Result so far: 3542.75
Deduct 270 from 320 and we're left with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

On to step 9:
54 goes into 500 9 times with a remainder of 14.
Use 9 as the next digit of our solution. 
Result so far: 3542.759
The remainder is 14 after subtracting 486 from 500.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

On to step 10:
54 goes into 140 2 times with a remainder of 32.
Record the quotient 2 as the next digit in the result. 
Result so far: 3542.7592
If we subtract 108 from 140, we get 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Step 11:
When dividing 320 by 54, we get 5 with a remainder of 50.
The number 5 becomes the next digit in our result. 
Result so far: 3542.75925
Deduct 270 from 320 and we're left with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Let's proceed to step 12:
500 divided by 54 is 9 with a remainder of 14.
Record the quotient 9 as the next digit in the result. 
Result so far: 3542.759259
Deduct 486 from 500 and we're left with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

On to step 13:
54 goes into 140 2 times with a remainder of 32.
Put 2 as the next digit of the answer. 
Result so far: 3542.7592592
Deduct 108 from 140 and we're left with 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

On to step 14:
The number 54 fits into 320 5 times, leaving a remainder of 50.
The next digit of our result is 5. 
Result so far: 3542.75925925
Subtract 270 from 320 to get 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

After the division, we end up with 3542.75925925 and a remainder of 5e-08.