8831399 ÷ 825 
The aim is to understand the frequency of 825 in 8831399.

Step 1:
The number 825 fits into 8 0 times, leaving a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Bring next digit (8) of the dividend behind the 8 and repeat the process: 88 / 825

Moving on to step 2:
825 can be fit into 88 0 times, resulting in a remainder of 88.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 88 and we're left with 88.
Append the next digit (3) from the dividend to 88 and continue with: 883 / 825

Advancing to step 3:
If we divide 883 by 825, we get 1 and a remainder of 58.
The next digit of our result is 1. 
Result so far: 1.0
Subtracting 825 from 883 leaves us with 58.
Append the next digit (1) from the dividend to 58 and continue with: 581 / 825

Moving on to step 4:
825 goes into 581 0 times with a remainder of 581.
The number 0 becomes the next digit in our result. 
Result so far: 10.0
Subtract 0 from 581 to get 581.
Fetch the next digit (3) from the dividend, attach it to 581 and continue: 5813 / 825

On to step 5:
If we divide 5813 by 825, we get 7 and a remainder of 38.
Use 7 as the next digit of our solution. 
Result so far: 107.0
If we take 5775 away from 5813, we end up with 38.
Take the next digit (9) from the dividend and append it to 38, then repeat: 389 / 825

Step 6:
389 divided by 825 is 0 with a remainder of 389.
Put 0 as the next digit of the answer. 
Result so far: 1070.0
Deduct 0 from 389 and we're left with 389.
Include the next digit (9) from the dividend after 389, then repeat: 3899 / 825

Advancing to step 7:
825 can be fit into 3899 4 times, resulting in a remainder of 599.
Record the quotient 4 as the next digit in the result. 
Result so far: 10704.0
If we take 3300 away from 3899, we end up with 599.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5990, and continue the process.

Advancing to step 8:
When dividing 5990 by 825, we get 7 with a remainder of 215.
The next digit of our result is 7. 
Result so far: 10704.7
If we subtract 5775 from 5990, we get 215.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2150, and continue the process.

Going ahead to step 9:
The number 825 fits into 2150 2 times, leaving a remainder of 500.
Record the quotient 2 as the next digit in the result. 
Result so far: 10704.72
Subtracting 1650 from 2150 leaves us with 500.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5000, and continue the process.

Let's proceed to step 10:
The number 825 fits into 5000 6 times, leaving a remainder of 50.
The next digit of our result is 6. 
Result so far: 10704.726
If we subtract 4950 from 5000, we get 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Step 11:
If we divide 500 by 825, we get 0 and a remainder of 500.
The number 0 becomes the next digit in our result. 
Result so far: 10704.726
If we subtract 0 from 500, we get 500.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5000, and continue the process.

Advancing to step 12:
5000 divided by 825 is 6 with a remainder of 50.
Put 6 as the next digit of the answer. 
Result so far: 10704.72606
If we take 4950 away from 5000, we end up with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Going ahead to step 13:
500 divided by 825 is 0 with a remainder of 500.
Use 0 as the next digit of our solution. 
Result so far: 10704.72606
Subtract 0 from 500 to get 500.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5000, and continue the process.

On to step 14:
825 goes into 5000 6 times with a remainder of 50.
Put 6 as the next digit of the answer. 
Result so far: 10704.7260606
The remainder is 50 after subtracting 4950 from 5000.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Going ahead to step 15:
825 goes into 500 0 times with a remainder of 500.
The next digit of our result is 0. 
Result so far: 10704.7260606
Deduct 0 from 500 and we're left with 500.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5000, and continue the process.

The quotient of the division is 10704.7260606, and the remainder is 5e-07.