We look at the division of 20812998 by 955 
The aim is to understand the frequency of 955 in 20812998.

Step 1:
955 goes into 2 0 times with a remainder of 2.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 2 and we're left with 2.
Take the next digit (0) from the dividend and append it to 2, then repeat: 20 / 955

Moving on to step 2:
When dividing 20 by 955, we get 0 with a remainder of 20.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 20, we end up with 20.
Include the next digit (8) from the dividend after 20, then repeat: 208 / 955

Advancing to step 3:
If we divide 208 by 955, we get 0 and a remainder of 208.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 208 after subtracting 0 from 208.
Include the next digit (1) from the dividend after 208, then repeat: 2081 / 955

Going ahead to step 4:
955 goes into 2081 2 times with a remainder of 171.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
Deduct 1910 from 2081 and we're left with 171.
Append the next digit (2) from the dividend to 171 and continue with: 1712 / 955

Let's proceed to step 5:
955 can be fit into 1712 1 times, resulting in a remainder of 757.
The number 1 becomes the next digit in our result. 
Result so far: 21.0
Deduct 955 from 1712 and we're left with 757.
Take the next digit (9) from the dividend and append it to 757, then repeat: 7579 / 955

Step 6:
7579 divided by 955 is 7 with a remainder of 894.
The next digit of our result is 7. 
Result so far: 217.0
If we subtract 6685 from 7579, we get 894.
Take the next digit (9) from the dividend and append it to 894, then repeat: 8949 / 955

On to step 7:
The number 955 fits into 8949 9 times, leaving a remainder of 354.
The number 9 becomes the next digit in our result. 
Result so far: 2179.0
Subtract 8595 from 8949 to get 354.
Take the next digit (8) from the dividend and append it to 354, then repeat: 3548 / 955

Advancing to step 8:
If we divide 3548 by 955, we get 3 and a remainder of 683.
Use 3 as the next digit of our solution. 
Result so far: 21793.0
The remainder is 683 after subtracting 2865 from 3548.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6830, and continue the process.

On to step 9:
955 can be fit into 6830 7 times, resulting in a remainder of 145.
The next digit of our result is 7. 
Result so far: 21793.7
If we subtract 6685 from 6830, we get 145.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1450, and continue the process.

On to step 10:
1450 divided by 955 is 1 with a remainder of 495.
Record the quotient 1 as the next digit in the result. 
Result so far: 21793.71
Deduct 955 from 1450 and we're left with 495.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4950, and continue the process.

Moving on to step 11:
The number 955 fits into 4950 5 times, leaving a remainder of 175.
The number 5 becomes the next digit in our result. 
Result so far: 21793.715
The remainder is 175 after subtracting 4775 from 4950.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1750, and continue the process.

Advancing to step 12:
955 can be fit into 1750 1 times, resulting in a remainder of 795.
Use 1 as the next digit of our solution. 
Result so far: 21793.7151
The remainder is 795 after subtracting 955 from 1750.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7950, and continue the process.

Moving on to step 13:
955 can be fit into 7950 8 times, resulting in a remainder of 310.
The next digit of our result is 8. 
Result so far: 21793.71518
Subtract 7640 from 7950 to get 310.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3100, and continue the process.

Advancing to step 14:
The number 955 fits into 3100 3 times, leaving a remainder of 235.
Put 3 as the next digit of the answer. 
Result so far: 21793.715183
Deduct 2865 from 3100 and we're left with 235.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2350, and continue the process.

Going ahead to step 15:
When dividing 2350 by 955, we get 2 with a remainder of 440.
Record the quotient 2 as the next digit in the result. 
Result so far: 21793.7151832
Subtracting 1910 from 2350 leaves us with 440.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4400, and continue the process.

Moving on to step 16:
The number 955 fits into 4400 4 times, leaving a remainder of 580.
Record the quotient 4 as the next digit in the result. 
Result so far: 21793.71518324
Subtract 3820 from 4400 to get 580.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5800, and continue the process.

The final outcome is 21793.71518324, with a leftover of 5.8e-07.