388649 ÷ 54 
The aim is to understand the frequency of 54 in 388649.

Let's proceed to step 1:
If we divide 3 by 54, we get 0 and a remainder of 3.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 3 after subtracting 0 from 3.
Take the next digit (8) from the dividend and append it to 3, then repeat: 38 / 54

On to step 2:
When dividing 38 by 54, we get 0 with a remainder of 38.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 38 and we're left with 38.
Take the next digit (8) from the dividend and append it to 38, then repeat: 388 / 54

Advancing to step 3:
The number 54 fits into 388 7 times, leaving a remainder of 10.
Use 7 as the next digit of our solution. 
Result so far: 7.0
Subtract 378 from 388 to get 10.
Grab the next digit (6) from the dividend, add it to 10, then carry on: 106 / 54

Let's proceed to step 4:
If we divide 106 by 54, we get 1 and a remainder of 52.
The next digit of our result is 1. 
Result so far: 71.0
If we take 54 away from 106, we end up with 52.
Grab the next digit (4) from the dividend, add it to 52, then carry on: 524 / 54

Going ahead to step 5:
54 goes into 524 9 times with a remainder of 38.
Record the quotient 9 as the next digit in the result. 
Result so far: 719.0
Deduct 486 from 524 and we're left with 38.
Include the next digit (9) from the dividend after 38, then repeat: 389 / 54

Advancing to step 6:
When dividing 389 by 54, we get 7 with a remainder of 11.
Record the quotient 7 as the next digit in the result. 
Result so far: 7197.0
If we take 378 away from 389, we end up with 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Moving on to step 7:
54 goes into 110 2 times with a remainder of 2.
The number 2 becomes the next digit in our result. 
Result so far: 7197.2
Deduct 108 from 110 and we're left 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.

Let's proceed to step 8:
20 divided by 54 is 0 with a remainder of 20.
The number 0 becomes the next digit in our result. 
Result so far: 7197.2
Deduct 0 from 20 and we're left 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.

Step 9:
200 divided by 54 is 3 with a remainder of 38.
Put 3 as the next digit of the answer. 
Result so far: 7197.203
Deduct 162 from 200 and we're left with 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 10:
When dividing 380 by 54, we get 7 with a remainder of 2.
The next digit of our result is 7. 
Result so far: 7197.2037
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.

On to step 11:
If we divide 20 by 54, we get 0 and a remainder of 20.
Use 0 as the next digit of our solution. 
Result so far: 7197.2037
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 12:
If we divide 200 by 54, we get 3 and a remainder of 38.
The next digit of our result is 3. 
Result so far: 7197.203703
If we subtract 162 from 200, we 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 13:
If we divide 380 by 54, we get 7 and a remainder of 2.
Record the quotient 7 as the next digit in the result. 
Result so far: 7197.2037037
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.

Let's proceed to step 14:
The number 54 fits into 20 0 times, leaving a remainder of 20.
The number 0 becomes the next digit in our result. 
Result so far: 7197.2037037
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.

In conclusion, the division gives 7197.2037037 with a balance of 2e-08.