We look at the division of 28353766 by 980 
The aim is to understand the frequency of 980 in 28353766.

Step 1:
If we divide 2 by 980, we get 0 and a remainder of 2.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 2 to get 2.
Grab the next digit (8) from the dividend, add it to 2, then carry on: 28 / 980

On to step 2:
28 divided by 980 is 0 with a remainder of 28.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 28, we get 28.
Include the next digit (3) from the dividend after 28, then repeat: 283 / 980

Going ahead to step 3:
283 divided by 980 is 0 with a remainder of 283.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 283 after subtracting 0 from 283.
Include the next digit (5) from the dividend after 283, then repeat: 2835 / 980

Going ahead to step 4:
If we divide 2835 by 980, we get 2 and a remainder of 875.
The next digit of our result is 2. 
Result so far: 2.0
If we subtract 1960 from 2835, we get 875.
Append the next digit (3) from the dividend to 875 and continue with: 8753 / 980

On to step 5:
The number 980 fits into 8753 8 times, leaving a remainder of 913.
Put 8 as the next digit of the answer. 
Result so far: 28.0
Deduct 7840 from 8753 and we're left with 913.
Fetch the next digit (7) from the dividend, attach it to 913 and continue: 9137 / 980

Step 6:
980 can be fit into 9137 9 times, resulting in a remainder of 317.
Use 9 as the next digit of our solution. 
Result so far: 289.0
If we subtract 8820 from 9137, we get 317.
Append the next digit (6) from the dividend to 317 and continue with: 3176 / 980

On to step 7:
When dividing 3176 by 980, we get 3 with a remainder of 236.
Write down 3 as next digit of the result. 
Result so far: 2893.0
Subtracting 2940 from 3176 leaves us with 236.
Grab the next digit (6) from the dividend, add it to 236, then carry on: 2366 / 980

Step 8:
980 can be fit into 2366 2 times, resulting in a remainder of 406.
Use 2 as the next digit of our solution. 
Result so far: 28932.0
The remainder is 406 after subtracting 1960 from 2366.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4060, and continue the process.

On to step 9:
4060 divided by 980 is 4 with a remainder of 140.
The next digit of our result is 4. 
Result so far: 28932.4
If we subtract 3920 from 4060, we get 140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1400, and continue the process.

Going ahead to step 10:
1400 divided by 980 is 1 with a remainder of 420.
Use 1 as the next digit of our solution. 
Result so far: 28932.41
If we take 980 away from 1400, we end up with 420.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4200, and continue the process.

Going ahead to step 11:
980 can be fit into 4200 4 times, resulting in a remainder of 280.
The number 4 becomes the next digit in our result. 
Result so far: 28932.414
If we take 3920 away from 4200, we end up with 280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2800, and continue the process.

Step 12:
980 goes into 2800 2 times with a remainder of 840.
Use 2 as the next digit of our solution. 
Result so far: 28932.4142
Deduct 1960 from 2800 and we're left with 840.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8400, and continue the process.

Going ahead to step 13:
When dividing 8400 by 980, we get 8 with a remainder of 560.
Record the quotient 8 as the next digit in the result. 
Result so far: 28932.41428
If we subtract 7840 from 8400, we get 560.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5600, and continue the process.

On to step 14:
980 can be fit into 5600 5 times, resulting in a remainder of 700.
The next digit of our result is 5. 
Result so far: 28932.414285
If we subtract 4900 from 5600, we get 700.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7000, and continue the process.

Let's proceed to step 15:
If we divide 7000 by 980, we get 7 and a remainder of 140.
Write down 7 as next digit of the result. 
Result so far: 28932.4142857
The remainder is 140 after subtracting 6860 from 7000.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1400, and continue the process.

Let's proceed to step 16:
980 goes into 1400 1 times with a remainder of 420.
Use 1 as the next digit of our solution. 
Result so far: 28932.41428571
Subtract 980 from 1400 to get 420.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4200, and continue the process.

The final result is 28932.41428571 with a remainder of 4.2e-07.