We look at the division of 20466657 by 556 
The aim is to understand the frequency of 556 in 20466657.

Advancing to step 1:
The number 556 fits into 2 0 times, leaving a remainder of 2.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 2, we get 2.
Grab the next digit (0) from the dividend, add it to 2, then carry on: 20 / 556

Let's proceed to step 2:
20 divided by 556 is 0 with a remainder of 20.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 20, we get 20.
Include the next digit (4) from the dividend after 20, then repeat: 204 / 556

On to step 3:
204 divided by 556 is 0 with a remainder of 204.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 204 to get 204.
Grab the next digit (6) from the dividend, add it to 204, then carry on: 2046 / 556

Advancing to step 4:
The number 556 fits into 2046 3 times, leaving a remainder of 378.
The next digit of our result is 3. 
Result so far: 3.0
If we take 1668 away from 2046, we end up with 378.
Take the next digit (6) from the dividend and append it to 378, then repeat: 3786 / 556

Step 5:
556 goes into 3786 6 times with a remainder of 450.
The number 6 becomes the next digit in our result. 
Result so far: 36.0
If we take 3336 away from 3786, we end up with 450.
Fetch the next digit (6) from the dividend, attach it to 450 and continue: 4506 / 556

Step 6:
556 goes into 4506 8 times with a remainder of 58.
Put 8 as the next digit of the answer. 
Result so far: 368.0
Subtracting 4448 from 4506 leaves us with 58.
Fetch the next digit (5) from the dividend, attach it to 58 and continue: 585 / 556

Step 7:
If we divide 585 by 556, we get 1 and a remainder of 29.
The number 1 becomes the next digit in our result. 
Result so far: 3681.0
If we take 556 away from 585, we end up with 29.
Take the next digit (7) from the dividend and append it to 29, then repeat: 297 / 556

Step 8:
If we divide 297 by 556, we get 0 and a remainder of 297.
Use 0 as the next digit of our solution. 
Result so far: 36810.0
Deduct 0 from 297 and we're left with 297.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2970, and continue the process.

Going ahead to step 9:
556 can be fit into 2970 5 times, resulting in a remainder of 190.
Record the quotient 5 as the next digit in the result. 
Result so far: 36810.5
If we subtract 2780 from 2970, we get 190.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1900, and continue the process.

Moving on to step 10:
If we divide 1900 by 556, we get 3 and a remainder of 232.
Record the quotient 3 as the next digit in the result. 
Result so far: 36810.53
Deduct 1668 from 1900 and we're left with 232.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2320, and continue the process.

Step 11:
The number 556 fits into 2320 4 times, leaving a remainder of 96.
Record the quotient 4 as the next digit in the result. 
Result so far: 36810.534
Subtracting 2224 from 2320 leaves us with 96.
Since there are no more digits in the dividend, we add a zero to the remainder making it 960, and continue the process.

On to step 12:
If we divide 960 by 556, we get 1 and a remainder of 404.
The next digit of our result is 1. 
Result so far: 36810.5341
The remainder is 404 after subtracting 556 from 960.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4040, and continue the process.

On to step 13:
When dividing 4040 by 556, we get 7 with a remainder of 148.
Write down 7 as next digit of the result. 
Result so far: 36810.53417
Deduct 3892 from 4040 and we're left with 148.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1480, and continue the process.

On to step 14:
If we divide 1480 by 556, we get 2 and a remainder of 368.
The number 2 becomes the next digit in our result. 
Result so far: 36810.534172
Deduct 1112 from 1480 and we're left with 368.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3680, and continue the process.

Advancing to step 15:
The number 556 fits into 3680 6 times, leaving a remainder of 344.
Put 6 as the next digit of the answer. 
Result so far: 36810.5341726
Subtract 3336 from 3680 to get 344.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3440, and continue the process.

Step 16:
556 can be fit into 3440 6 times, resulting in a remainder of 104.
Write down 6 as next digit of the result. 
Result so far: 36810.53417266
Deduct 3336 from 3440 and we're left with 104.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1040, and continue the process.

The final result is 36810.53417266 with a remainder of 1.04e-07.