21464389 ÷ 823 
The aim is to understand the frequency of 823 in 21464389.

Going ahead to step 1:
823 can be fit into 2 0 times, resulting in a remainder of 2.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 2 leaves us with 2.
Bring next digit (1) of the dividend behind the 2 and repeat the process: 21 / 823

Let's proceed to step 2:
When dividing 21 by 823, we get 0 with a remainder of 21.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 21, we end up with 21.
Grab the next digit (4) from the dividend, add it to 21, then carry on: 214 / 823

Advancing to step 3:
The number 823 fits into 214 0 times, leaving a remainder of 214.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 214, we get 214.
Grab the next digit (6) from the dividend, add it to 214, then carry on: 2146 / 823

On to step 4:
The number 823 fits into 2146 2 times, leaving a remainder of 500.
Put 2 as the next digit of the answer. 
Result so far: 2.0
If we subtract 1646 from 2146, we get 500.
Grab the next digit (4) from the dividend, add it to 500, then carry on: 5004 / 823

Step 5:
5004 divided by 823 is 6 with a remainder of 66.
Record the quotient 6 as the next digit in the result. 
Result so far: 26.0
Subtracting 4938 from 5004 leaves us with 66.
Append the next digit (3) from the dividend to 66 and continue with: 663 / 823

Step 6:
When dividing 663 by 823, we get 0 with a remainder of 663.
The next digit of our result is 0. 
Result so far: 260.0
The remainder is 663 after subtracting 0 from 663.
Bring next digit (8) of the dividend behind the 663 and repeat the process: 6638 / 823

Advancing to step 7:
The number 823 fits into 6638 8 times, leaving a remainder of 54.
The number 8 becomes the next digit in our result. 
Result so far: 2608.0
Subtracting 6584 from 6638 leaves us with 54.
Append the next digit (9) from the dividend to 54 and continue with: 549 / 823

On to step 8:
The number 823 fits into 549 0 times, leaving a remainder of 549.
Put 0 as the next digit of the answer. 
Result so far: 26080.0
If we take 0 away from 549, we end up with 549.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5490, and continue the process.

Advancing to step 9:
5490 divided by 823 is 6 with a remainder of 552.
Put 6 as the next digit of the answer. 
Result so far: 26080.6
Subtracting 4938 from 5490 leaves us with 552.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5520, and continue the process.

Let's proceed to step 10:
823 goes into 5520 6 times with a remainder of 582.
Record the quotient 6 as the next digit in the result. 
Result so far: 26080.66
Subtract 4938 from 5520 to get 582.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5820, and continue the process.

The quotient of the division is 26080.66, and the remainder is 0.582.