We look at the division of 69874729 by 728 
The aim is to understand the frequency of 728 in 69874729.

Moving on to step 1:
If we divide 6 by 728, we get 0 and a remainder of 6.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 6, we get 6.
Bring next digit (9) of the dividend behind the 6 and repeat the process: 69 / 728

Advancing to step 2:
When dividing 69 by 728, we get 0 with a remainder of 69.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 69, we get 69.
Take the next digit (8) from the dividend and append it to 69, then repeat: 698 / 728

Advancing to step 3:
698 divided by 728 is 0 with a remainder of 698.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 698 after subtracting 0 from 698.
Take the next digit (7) from the dividend and append it to 698, then repeat: 6987 / 728

Going ahead to step 4:
The number 728 fits into 6987 9 times, leaving a remainder of 435.
Put 9 as the next digit of the answer. 
Result so far: 9.0
Deduct 6552 from 6987 and we're left with 435.
Include the next digit (4) from the dividend after 435, then repeat: 4354 / 728

Step 5:
4354 divided by 728 is 5 with a remainder of 714.
The number 5 becomes the next digit in our result. 
Result so far: 95.0
The remainder is 714 after subtracting 3640 from 4354.
Take the next digit (7) from the dividend and append it to 714, then repeat: 7147 / 728

On to step 6:
The number 728 fits into 7147 9 times, leaving a remainder of 595.
Write down 9 as next digit of the result. 
Result so far: 959.0
Deduct 6552 from 7147 and we're left with 595.
Grab the next digit (2) from the dividend, add it to 595, then carry on: 5952 / 728

Advancing to step 7:
If we divide 5952 by 728, we get 8 and a remainder of 128.
The next digit of our result is 8. 
Result so far: 9598.0
Deduct 5824 from 5952 and we're left with 128.
Bring next digit (9) of the dividend behind the 128 and repeat the process: 1289 / 728

Advancing to step 8:
1289 divided by 728 is 1 with a remainder of 561.
The number 1 becomes the next digit in our result. 
Result so far: 95981.0
If we subtract 728 from 1289, we get 561.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5610, and continue the process.

Going ahead to step 9:
When dividing 5610 by 728, we get 7 with a remainder of 514.
The next digit of our result is 7. 
Result so far: 95981.7
If we take 5096 away from 5610, we end up with 514.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5140, and continue the process.

On to step 10:
If we divide 5140 by 728, we get 7 and a remainder of 44.
Put 7 as the next digit of the answer. 
Result so far: 95981.77
Subtracting 5096 from 5140 leaves us with 44.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

The final outcome is 95981.77, with a leftover of 0.044.