54123930 divided by 728 
The aim is to understand the frequency of 728 in 54123930.

Let's proceed to step 1:
When dividing 5 by 728, we get 0 with a remainder of 5.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 5 to get 5.
Grab the next digit (4) from the dividend, add it to 5, then carry on: 54 / 728

Going ahead to step 2:
54 divided by 728 is 0 with a remainder of 54.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 54, we end up with 54.
Grab the next digit (1) from the dividend, add it to 54, then carry on: 541 / 728

Step 3:
If we divide 541 by 728, we get 0 and a remainder of 541.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 541 to get 541.
Bring next digit (2) of the dividend behind the 541 and repeat the process: 5412 / 728

Advancing to step 4:
5412 divided by 728 is 7 with a remainder of 316.
Record the quotient 7 as the next digit in the result. 
Result so far: 7.0
Deduct 5096 from 5412 and we're left with 316.
Take the next digit (3) from the dividend and append it to 316, then repeat: 3163 / 728

Let's proceed to step 5:
728 goes into 3163 4 times with a remainder of 251.
Record the quotient 4 as the next digit in the result. 
Result so far: 74.0
The remainder is 251 after subtracting 2912 from 3163.
Take the next digit (9) from the dividend and append it to 251, then repeat: 2519 / 728

Advancing to step 6:
2519 divided by 728 is 3 with a remainder of 335.
Record the quotient 3 as the next digit in the result. 
Result so far: 743.0
Subtracting 2184 from 2519 leaves us with 335.
Include the next digit (3) from the dividend after 335, then repeat: 3353 / 728

Advancing to step 7:
728 can be fit into 3353 4 times, resulting in a remainder of 441.
Put 4 as the next digit of the answer. 
Result so far: 7434.0
Subtracting 2912 from 3353 leaves us with 441.
Bring next digit (0) of the dividend behind the 441 and repeat the process: 4410 / 728

Going ahead to step 8:
728 goes into 4410 6 times with a remainder of 42.
The number 6 becomes the next digit in our result. 
Result so far: 74346.0
The remainder is 42 after subtracting 4368 from 4410.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Going ahead to step 9:
728 goes into 420 0 times with a remainder of 420.
Put 0 as the next digit of the answer. 
Result so far: 74346.0
Subtracting 0 from 420 leaves us with 420.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4200, and continue the process.

Going ahead to step 10:
4200 divided by 728 is 5 with a remainder of 560.
The next digit of our result is 5. 
Result so far: 74346.05
The remainder is 560 after subtracting 3640 from 4200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5600, and continue the process.

Advancing to step 11:
The number 728 fits into 5600 7 times, leaving a remainder of 504.
Record the quotient 7 as the next digit in the result. 
Result so far: 74346.057
Subtract 5096 from 5600 to get 504.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5040, and continue the process.

Let's proceed to step 12:
If we divide 5040 by 728, we get 6 and a remainder of 672.
Write down 6 as next digit of the result. 
Result so far: 74346.0576
Subtracting 4368 from 5040 leaves us with 672.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6720, and continue the process.

Step 13:
728 goes into 6720 9 times with a remainder of 168.
The next digit of our result is 9. 
Result so far: 74346.05769
If we take 6552 away from 6720, we end up with 168.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1680, and continue the process.

Advancing to step 14:
When dividing 1680 by 728, we get 2 with a remainder of 224.
Use 2 as the next digit of our solution. 
Result so far: 74346.057692
Deduct 1456 from 1680 and we're left with 224.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2240, and continue the process.

Going ahead to step 15:
When dividing 2240 by 728, we get 3 with a remainder of 56.
The next digit of our result is 3. 
Result so far: 74346.0576923
If we subtract 2184 from 2240, we get 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Let's proceed to step 16:
728 goes into 560 0 times with a remainder of 560.
Put 0 as the next digit of the answer. 
Result so far: 74346.0576923
Deduct 0 from 560 and we're left with 560.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5600, and continue the process.

After the division, we end up with 74346.0576923 and a remainder of 5.6e-07.