We look at the division of 24871646 by 820 
The aim is to understand the frequency of 820 in 24871646.

Step 1:
If we divide 2 by 820, we get 0 and a remainder of 2.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 2, we end up with 2.
Bring next digit (4) of the dividend behind the 2 and repeat the process: 24 / 820

Let's proceed to step 2:
24 divided by 820 is 0 with a remainder of 24.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 24, we end up with 24.
Grab the next digit (8) from the dividend, add it to 24, then carry on: 248 / 820

Moving on to step 3:
The number 820 fits into 248 0 times, leaving a remainder of 248.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 248, we end up with 248.
Fetch the next digit (7) from the dividend, attach it to 248 and continue: 2487 / 820

Step 4:
If we divide 2487 by 820, we get 3 and a remainder of 27.
Record the quotient 3 as the next digit in the result. 
Result so far: 3.0
Subtract 2460 from 2487 to get 27.
Grab the next digit (1) from the dividend, add it to 27, then carry on: 271 / 820

Moving on to step 5:
820 can be fit into 271 0 times, resulting in a remainder of 271.
Record the quotient 0 as the next digit in the result. 
Result so far: 30.0
If we take 0 away from 271, we end up with 271.
Append the next digit (6) from the dividend to 271 and continue with: 2716 / 820

On to step 6:
820 can be fit into 2716 3 times, resulting in a remainder of 256.
Put 3 as the next digit of the answer. 
Result so far: 303.0
Deduct 2460 from 2716 and we're left with 256.
Bring next digit (4) of the dividend behind the 256 and repeat the process: 2564 / 820

Going ahead to step 7:
If we divide 2564 by 820, we get 3 and a remainder of 104.
The number 3 becomes the next digit in our result. 
Result so far: 3033.0
If we subtract 2460 from 2564, we get 104.
Include the next digit (6) from the dividend after 104, then repeat: 1046 / 820

Going ahead to step 8:
If we divide 1046 by 820, we get 1 and a remainder of 226.
Write down 1 as next digit of the result. 
Result so far: 30331.0
If we take 820 away from 1046, we end up with 226.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2260, and continue the process.

Step 9:
820 goes into 2260 2 times with a remainder of 620.
Use 2 as the next digit of our solution. 
Result so far: 30331.2
Subtract 1640 from 2260 to get 620.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6200, and continue the process.

Advancing to step 10:
820 goes into 6200 7 times with a remainder of 460.
The number 7 becomes the next digit in our result. 
Result so far: 30331.27
If we subtract 5740 from 6200, we get 460.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4600, and continue the process.

Step 11:
820 goes into 4600 5 times with a remainder of 500.
Record the quotient 5 as the next digit in the result. 
Result so far: 30331.275
If we take 4100 away from 4600, we end up 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.

On to step 12:
The number 820 fits into 5000 6 times, leaving a remainder of 80.
The number 6 becomes the next digit in our result. 
Result so far: 30331.2756
Subtract 4920 from 5000 to get 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Step 13:
When dividing 800 by 820, we get 0 with a remainder of 800.
Record the quotient 0 as the next digit in the result. 
Result so far: 30331.2756
If we subtract 0 from 800, we get 800.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8000, and continue the process.

Moving on to step 14:
The number 820 fits into 8000 9 times, leaving a remainder of 620.
Record the quotient 9 as the next digit in the result. 
Result so far: 30331.275609
If we take 7380 away from 8000, we end up with 620.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6200, and continue the process.

Moving on to step 15:
The number 820 fits into 6200 7 times, leaving a remainder of 460.
Record the quotient 7 as the next digit in the result. 
Result so far: 30331.2756097
The remainder is 460 after subtracting 5740 from 6200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4600, and continue the process.

Let's proceed to step 16:
If we divide 4600 by 820, we get 5 and a remainder of 500.
Write down 5 as next digit of the result. 
Result so far: 30331.27560975
If we take 4100 away from 4600, we end up 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.

After the division, we end up with 30331.27560975 and a remainder of 5e-07.