We're dividing 823912 by 824 
The aim is to understand the frequency of 824 in 823912.

On to step 1:
The number 824 fits into 8 0 times, leaving a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 8, we get 8.
Bring next digit (2) of the dividend behind the 8 and repeat the process: 82 / 824

On to step 2:
The number 824 fits into 82 0 times, leaving a remainder of 82.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 82, we get 82.
Bring next digit (3) of the dividend behind the 82 and repeat the process: 823 / 824

Going ahead to step 3:
If we divide 823 by 824, we get 0 and a remainder of 823.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 823, we end up with 823.
Bring next digit (9) of the dividend behind the 823 and repeat the process: 8239 / 824

Moving on to step 4:
If we divide 8239 by 824, we get 9 and a remainder of 823.
The number 9 becomes the next digit in our result. 
Result so far: 9.0
Deduct 7416 from 8239 and we're left with 823.
Take the next digit (1) from the dividend and append it to 823, then repeat: 8231 / 824

Step 5:
When dividing 8231 by 824, we get 9 with a remainder of 815.
Record the quotient 9 as the next digit in the result. 
Result so far: 99.0
The remainder is 815 after subtracting 7416 from 8231.
Append the next digit (2) from the dividend to 815 and continue with: 8152 / 824

Going ahead to step 6:
824 goes into 8152 9 times with a remainder of 736.
Write down 9 as next digit of the result. 
Result so far: 999.0
Deduct 7416 from 8152 and we're left with 736.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7360, and continue the process.

Advancing to step 7:
When dividing 7360 by 824, we get 8 with a remainder of 768.
The next digit of our result is 8. 
Result so far: 999.8
If we take 6592 away from 7360, we end up with 768.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7680, and continue the process.

Moving on to step 8:
824 goes into 7680 9 times with a remainder of 264.
Use 9 as the next digit of our solution. 
Result so far: 999.89
If we take 7416 away from 7680, we end up with 264.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2640, and continue the process.

Let's proceed to step 9:
If we divide 2640 by 824, we get 3 and a remainder of 168.
The next digit of our result is 3. 
Result so far: 999.893
If we take 2472 away from 2640, 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.

Going ahead to step 10:
824 can be fit into 1680 2 times, resulting in a remainder of 32.
Put 2 as the next digit of the answer. 
Result so far: 999.8932
Subtract 1648 from 1680 to get 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Moving on to step 11:
The number 824 fits into 320 0 times, leaving a remainder of 320.
Record the quotient 0 as the next digit in the result. 
Result so far: 999.8932
Subtracting 0 from 320 leaves us with 320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3200, and continue the process.

Let's proceed to step 12:
The number 824 fits into 3200 3 times, leaving a remainder of 728.
Use 3 as the next digit of our solution. 
Result so far: 999.893203
Subtract 2472 from 3200 to get 728.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7280, and continue the process.

Step 13:
824 can be fit into 7280 8 times, resulting in a remainder of 688.
Write down 8 as next digit of the result. 
Result so far: 999.8932038
Subtract 6592 from 7280 to get 688.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6880, and continue the process.

Let's proceed to step 14:
If we divide 6880 by 824, we get 8 and a remainder of 288.
Use 8 as the next digit of our solution. 
Result so far: 999.89320388
The remainder is 288 after subtracting 6592 from 6880.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2880, and continue the process.

After the division, we end up with 999.89320388 and a remainder of 2.88e-07.