We look at the division of 7742898 by 728 
The aim is to understand the frequency of 728 in 7742898.

Advancing to step 1:
The number 728 fits into 7 0 times, leaving a remainder of 7.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 7 leaves us with 7.
Fetch the next digit (7) from the dividend, attach it to 7 and continue: 77 / 728

Step 2:
77 divided by 728 is 0 with a remainder of 77.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 77 to get 77.
Append the next digit (4) from the dividend to 77 and continue with: 774 / 728

Advancing to step 3:
The number 728 fits into 774 1 times, leaving a remainder of 46.
The next digit of our result is 1. 
Result so far: 1.0
Subtract 728 from 774 to get 46.
Take the next digit (2) from the dividend and append it to 46, then repeat: 462 / 728

Advancing to step 4:
462 divided by 728 is 0 with a remainder of 462.
Record the quotient 0 as the next digit in the result. 
Result so far: 10.0
The remainder is 462 after subtracting 0 from 462.
Grab the next digit (8) from the dividend, add it to 462, then carry on: 4628 / 728

Advancing to step 5:
The number 728 fits into 4628 6 times, leaving a remainder of 260.
Write down 6 as next digit of the result. 
Result so far: 106.0
Subtract 4368 from 4628 to get 260.
Fetch the next digit (9) from the dividend, attach it to 260 and continue: 2609 / 728

Step 6:
728 goes into 2609 3 times with a remainder of 425.
Write down 3 as next digit of the result. 
Result so far: 1063.0
Deduct 2184 from 2609 and we're left with 425.
Bring next digit (8) of the dividend behind the 425 and repeat the process: 4258 / 728

Advancing to step 7:
The number 728 fits into 4258 5 times, leaving a remainder of 618.
Use 5 as the next digit of our solution. 
Result so far: 10635.0
If we subtract 3640 from 4258, we get 618.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6180, and continue the process.

Going ahead to step 8:
The number 728 fits into 6180 8 times, leaving a remainder of 356.
Use 8 as the next digit of our solution. 
Result so far: 10635.8
Subtracting 5824 from 6180 leaves us with 356.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3560, and continue the process.

Going ahead to step 9:
The number 728 fits into 3560 4 times, leaving a remainder of 648.
The number 4 becomes the next digit in our result. 
Result so far: 10635.84
If we subtract 2912 from 3560, we get 648.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6480, and continue the process.

On to step 10:
728 goes into 6480 8 times with a remainder of 656.
Use 8 as the next digit of our solution. 
Result so far: 10635.848
The remainder is 656 after subtracting 5824 from 6480.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6560, and continue the process.

Advancing to step 11:
728 can be fit into 6560 9 times, resulting in a remainder of 8.
Use 9 as the next digit of our solution. 
Result so far: 10635.8489
If we subtract 6552 from 6560, we get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Moving on to step 12:
When dividing 80 by 728, we get 0 with a remainder of 80.
Use 0 as the next digit of our solution. 
Result so far: 10635.8489
If we take 0 away from 80, we end up with 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Moving on to step 13:
When dividing 800 by 728, we get 1 with a remainder of 72.
The number 1 becomes the next digit in our result. 
Result so far: 10635.848901
If we take 728 away from 800, we end up with 72.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

Moving on to step 14:
728 can be fit into 720 0 times, resulting in a remainder of 720.
The number 0 becomes the next digit in our result. 
Result so far: 10635.848901
Subtracting 0 from 720 leaves us with 720.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7200, and continue the process.

Step 15:
728 can be fit into 7200 9 times, resulting in a remainder of 648.
Put 9 as the next digit of the answer. 
Result so far: 10635.84890109
Subtract 6552 from 7200 to get 648.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6480, and continue the process.

In conclusion, the division gives 10635.84890109 with a balance of 6.48e-07.