We look at the division of 64164403 by 551 
The aim is to understand the frequency of 551 in 64164403.

Advancing to step 1:
If we divide 6 by 551, we get 0 and a remainder of 6.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 6 to get 6.
Take the next digit (4) from the dividend and append it to 6, then repeat: 64 / 551

Moving on to step 2:
64 divided by 551 is 0 with a remainder of 64.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 64, we get 64.
Grab the next digit (1) from the dividend, add it to 64, then carry on: 641 / 551

Going ahead to step 3:
641 divided by 551 is 1 with a remainder of 90.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
The remainder is 90 after subtracting 551 from 641.
Fetch the next digit (6) from the dividend, attach it to 90 and continue: 906 / 551

Step 4:
If we divide 906 by 551, we get 1 and a remainder of 355.
Use 1 as the next digit of our solution. 
Result so far: 11.0
Subtracting 551 from 906 leaves us with 355.
Grab the next digit (4) from the dividend, add it to 355, then carry on: 3554 / 551

Going ahead to step 5:
The number 551 fits into 3554 6 times, leaving a remainder of 248.
Use 6 as the next digit of our solution. 
Result so far: 116.0
Subtracting 3306 from 3554 leaves us with 248.
Include the next digit (4) from the dividend after 248, then repeat: 2484 / 551

On to step 6:
551 goes into 2484 4 times with a remainder of 280.
The next digit of our result is 4. 
Result so far: 1164.0
If we subtract 2204 from 2484, we get 280.
Grab the next digit (0) from the dividend, add it to 280, then carry on: 2800 / 551

Advancing to step 7:
551 goes into 2800 5 times with a remainder of 45.
Record the quotient 5 as the next digit in the result. 
Result so far: 11645.0
Subtracting 2755 from 2800 leaves us with 45.
Fetch the next digit (3) from the dividend, attach it to 45 and continue: 453 / 551

Let's proceed to step 8:
551 goes into 453 0 times with a remainder of 453.
The number 0 becomes the next digit in our result. 
Result so far: 116450.0
The remainder is 453 after subtracting 0 from 453.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4530, and continue the process.

Advancing to step 9:
The number 551 fits into 4530 8 times, leaving a remainder of 122.
The next digit of our result is 8. 
Result so far: 116450.8
Deduct 4408 from 4530 and we're left with 122.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1220, and continue the process.

Step 10:
551 can be fit into 1220 2 times, resulting in a remainder of 118.
Record the quotient 2 as the next digit in the result. 
Result so far: 116450.82
The remainder is 118 after subtracting 1102 from 1220.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1180, and continue the process.

Let's proceed to step 11:
When dividing 1180 by 551, we get 2 with a remainder of 78.
Put 2 as the next digit of the answer. 
Result so far: 116450.822
If we subtract 1102 from 1180, we get 78.
Since there are no more digits in the dividend, we add a zero to the remainder making it 780, and continue the process.

After the division, we end up with 116450.822 and a remainder of 0.0078.