We're dividing 66453897 by 566 
The aim is to understand the frequency of 566 in 66453897.

Moving on to step 1:
When dividing 6 by 566, we get 0 with a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Grab the next digit (6) from the dividend, add it to 6, then carry on: 66 / 566

Moving on to step 2:
The number 566 fits into 66 0 times, leaving a remainder of 66.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 66 to get 66.
Grab the next digit (4) from the dividend, add it to 66, then carry on: 664 / 566

On to step 3:
The number 566 fits into 664 1 times, leaving a remainder of 98.
Put 1 as the next digit of the answer. 
Result so far: 1.0
The remainder is 98 after subtracting 566 from 664.
Grab the next digit (5) from the dividend, add it to 98, then carry on: 985 / 566

Advancing to step 4:
If we divide 985 by 566, we get 1 and a remainder of 419.
The next digit of our result is 1. 
Result so far: 11.0
Subtracting 566 from 985 leaves us with 419.
Grab the next digit (3) from the dividend, add it to 419, then carry on: 4193 / 566

Step 5:
If we divide 4193 by 566, we get 7 and a remainder of 231.
Put 7 as the next digit of the answer. 
Result so far: 117.0
If we take 3962 away from 4193, we end up with 231.
Fetch the next digit (8) from the dividend, attach it to 231 and continue: 2318 / 566

On to step 6:
2318 divided by 566 is 4 with a remainder of 54.
The next digit of our result is 4. 
Result so far: 1174.0
Subtract 2264 from 2318 to get 54.
Fetch the next digit (9) from the dividend, attach it to 54 and continue: 549 / 566

Moving on to step 7:
The number 566 fits into 549 0 times, leaving a remainder of 549.
The next digit of our result is 0. 
Result so far: 11740.0
The remainder is 549 after subtracting 0 from 549.
Bring next digit (7) of the dividend behind the 549 and repeat the process: 5497 / 566

Let's proceed to step 8:
When dividing 5497 by 566, we get 9 with a remainder of 403.
Use 9 as the next digit of our solution. 
Result so far: 117409.0
Deduct 5094 from 5497 and we're left with 403.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4030, and continue the process.

Step 9:
If we divide 4030 by 566, we get 7 and a remainder of 68.
Write down 7 as next digit of the result. 
Result so far: 117409.7
Deduct 3962 from 4030 and we're left with 68.
Since there are no more digits in the dividend, we add a zero to the remainder making it 680, and continue the process.

Step 10:
When dividing 680 by 566, we get 1 with a remainder of 114.
The next digit of our result is 1. 
Result so far: 117409.71
Subtract 566 from 680 to get 114.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1140, and continue the process.

Step 11:
566 goes into 1140 2 times with a remainder of 8.
Use 2 as the next digit of our solution. 
Result so far: 117409.712
If we take 1132 away from 1140, we end up with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

On to step 12:
If we divide 80 by 566, we get 0 and a remainder of 80.
The next digit of our result is 0. 
Result so far: 117409.712
Subtract 0 from 80 to get 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Let's proceed to step 13:
800 divided by 566 is 1 with a remainder of 234.
Write down 1 as next digit of the result. 
Result so far: 117409.71201
Subtracting 566 from 800 leaves us with 234.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2340, and continue the process.

Advancing to step 14:
566 can be fit into 2340 4 times, resulting in a remainder of 76.
Write down 4 as next digit of the result. 
Result so far: 117409.712014
If we take 2264 away from 2340, we end up with 76.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

Moving on to step 15:
566 goes into 760 1 times with a remainder of 194.
Record the quotient 1 as the next digit in the result. 
Result so far: 117409.7120141
If we take 566 away from 760, we end up with 194.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1940, and continue the process.

Moving on to step 16:
566 goes into 1940 3 times with a remainder of 242.
The number 3 becomes the next digit in our result. 
Result so far: 117409.71201413
Subtract 1698 from 1940 to get 242.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2420, and continue the process.

The final result is 117409.71201413 with a remainder of 2.42e-07.