28737658 ÷ 820 
The aim is to understand the frequency of 820 in 28737658.

Step 1:
820 can be fit into 2 0 times, resulting in a remainder of 2.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 2 leaves us with 2.
Bring next digit (8) of the dividend behind the 2 and repeat the process: 28 / 820

Let's proceed to step 2:
28 divided by 820 is 0 with a remainder of 28.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 28 leaves us with 28.
Fetch the next digit (7) from the dividend, attach it to 28 and continue: 287 / 820

Let's proceed to step 3:
820 goes into 287 0 times with a remainder of 287.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 287 and we're left with 287.
Take the next digit (3) from the dividend and append it to 287, then repeat: 2873 / 820

On to step 4:
820 can be fit into 2873 3 times, resulting in a remainder of 413.
Use 3 as the next digit of our solution. 
Result so far: 3.0
If we take 2460 away from 2873, we end up with 413.
Take the next digit (7) from the dividend and append it to 413, then repeat: 4137 / 820

Step 5:
If we divide 4137 by 820, we get 5 and a remainder of 37.
Record the quotient 5 as the next digit in the result. 
Result so far: 35.0
Deduct 4100 from 4137 and we're left with 37.
Bring next digit (6) of the dividend behind the 37 and repeat the process: 376 / 820

Going ahead to step 6:
The number 820 fits into 376 0 times, leaving a remainder of 376.
Record the quotient 0 as the next digit in the result. 
Result so far: 350.0
The remainder is 376 after subtracting 0 from 376.
Fetch the next digit (5) from the dividend, attach it to 376 and continue: 3765 / 820

Going ahead to step 7:
If we divide 3765 by 820, we get 4 and a remainder of 485.
Record the quotient 4 as the next digit in the result. 
Result so far: 3504.0
Deduct 3280 from 3765 and we're left with 485.
Append the next digit (8) from the dividend to 485 and continue with: 4858 / 820

Moving on to step 8:
820 goes into 4858 5 times with a remainder of 758.
Write down 5 as next digit of the result. 
Result so far: 35045.0
Subtracting 4100 from 4858 leaves us with 758.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7580, and continue the process.

Going ahead to step 9:
If we divide 7580 by 820, we get 9 and a remainder of 200.
Use 9 as the next digit of our solution. 
Result so far: 35045.9
If we take 7380 away from 7580, we end up with 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2000, and continue the process.

Going ahead to step 10:
820 can be fit into 2000 2 times, resulting in a remainder of 360.
Write down 2 as next digit of the result. 
Result so far: 35045.92
Subtract 1640 from 2000 to get 360.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3600, and continue the process.

Advancing to step 11:
If we divide 3600 by 820, we get 4 and a remainder of 320.
Put 4 as the next digit of the answer. 
Result so far: 35045.924
Subtract 3280 from 3600 to get 320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3200, and continue the process.

Advancing to step 12:
When dividing 3200 by 820, we get 3 with a remainder of 740.
Record the quotient 3 as the next digit in the result. 
Result so far: 35045.9243
The remainder is 740 after subtracting 2460 from 3200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7400, and continue the process.

Advancing to step 13:
When dividing 7400 by 820, we get 9 with a remainder of 20.
The next digit of our result is 9. 
Result so far: 35045.92439
If we take 7380 away from 7400, we end up with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Advancing to step 14:
The number 820 fits into 200 0 times, leaving a remainder of 200.
Use 0 as the next digit of our solution. 
Result so far: 35045.92439
Deduct 0 from 200 and we're left with 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2000, and continue the process.

Moving on to step 15:
820 goes into 2000 2 times with a remainder of 360.
The number 2 becomes the next digit in our result. 
Result so far: 35045.9243902
Subtracting 1640 from 2000 leaves us with 360.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3600, and continue the process.

Let's proceed to step 16:
When dividing 3600 by 820, we get 4 with a remainder of 320.
The next digit of our result is 4. 
Result so far: 35045.92439024
The remainder is 320 after subtracting 3280 from 3600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3200, and continue the process.

The final outcome is 35045.92439024, with a leftover of 3.2e-07.