We're dividing 728690 by 8 
The aim is to understand the frequency of 8 in 728690.

On to step 1:
8 can be fit into 7 0 times, resulting in a remainder of 7.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 7 after subtracting 0 from 7.
Bring next digit (2) of the dividend behind the 7 and repeat the process: 72 / 8

Moving on to step 2:
72 divided by 8 is 9 with a remainder of 0.
The number 9 becomes the next digit in our result. 
Result so far: 9.0
Deduct 72 from 72 and we're left with 0.
Grab the next digit (8) from the dividend, add it to 0, then carry on: 8 / 8

Advancing to step 3:
8 can be fit into 8 1 times, resulting in a remainder of 0.
The next digit of our result is 1. 
Result so far: 91.0
Deduct 8 from 8 and we're left with 0.
Append the next digit (6) from the dividend to 0 and continue with: 6 / 8

Let's proceed to step 4:
The number 8 fits into 6 0 times, leaving a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 910.0
If we take 0 away from 6, we end up with 6.
Grab the next digit (9) from the dividend, add it to 6, then carry on: 69 / 8

Moving on to step 5:
When dividing 69 by 8, we get 8 with a remainder of 5.
Use 8 as the next digit of our solution. 
Result so far: 9108.0
Subtracting 64 from 69 leaves us with 5.
Fetch the next digit (0) from the dividend, attach it to 5 and continue: 50 / 8

Going ahead to step 6:
The number 8 fits into 50 6 times, leaving a remainder of 2.
The next digit of our result is 6. 
Result so far: 91086.0
Subtracting 48 from 50 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.

Moving on to step 7:
8 can be fit into 20 2 times, resulting in a remainder of 4.
Put 2 as the next digit of the answer. 
Result so far: 91086.2
Subtracting 16 from 20 leaves us with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Advancing to step 8:
8 can be fit into 40 5 times, resulting in a remainder of 0.
Use 5 as the next digit of our solution. 
Result so far: 91086.25
If we subtract 40 from 40, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

On to step 9:
The number 8 fits into 0 0 times, leaving a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 91086.25
Deduct 0 from 0 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

On to step 10:
0 divided by 8 is 0 with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 91086.25
If we subtract 0 from 0, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The final outcome is 91086.25, with a leftover of 0.0.