We're dividing 64283909 by 561 
The aim is to understand the frequency of 561 in 64283909.

Step 1:
When dividing 6 by 561, we get 0 with a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 6 to get 6.
Grab the next digit (4) from the dividend, add it to 6, then carry on: 64 / 561

On to step 2:
If we divide 64 by 561, we get 0 and a remainder of 64.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 64 to get 64.
Grab the next digit (2) from the dividend, add it to 64, then carry on: 642 / 561

Advancing to step 3:
If we divide 642 by 561, we get 1 and a remainder of 81.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
If we subtract 561 from 642, we get 81.
Fetch the next digit (8) from the dividend, attach it to 81 and continue: 818 / 561

On to step 4:
561 can be fit into 818 1 times, resulting in a remainder of 257.
Write down 1 as next digit of the result. 
Result so far: 11.0
If we subtract 561 from 818, we get 257.
Take the next digit (3) from the dividend and append it to 257, then repeat: 2573 / 561

Going ahead to step 5:
The number 561 fits into 2573 4 times, leaving a remainder of 329.
The number 4 becomes the next digit in our result. 
Result so far: 114.0
If we take 2244 away from 2573, we end up with 329.
Take the next digit (9) from the dividend and append it to 329, then repeat: 3299 / 561

Moving on to step 6:
561 can be fit into 3299 5 times, resulting in a remainder of 494.
Write down 5 as next digit of the result. 
Result so far: 1145.0
If we take 2805 away from 3299, we end up with 494.
Append the next digit (0) from the dividend to 494 and continue with: 4940 / 561

Advancing to step 7:
561 goes into 4940 8 times with a remainder of 452.
The next digit of our result is 8. 
Result so far: 11458.0
Subtract 4488 from 4940 to get 452.
Include the next digit (9) from the dividend after 452, then repeat: 4529 / 561

Let's proceed to step 8:
When dividing 4529 by 561, we get 8 with a remainder of 41.
Record the quotient 8 as the next digit in the result. 
Result so far: 114588.0
If we subtract 4488 from 4529, we get 41.
Since there are no more digits in the dividend, we add a zero to the remainder making it 410, and continue the process.

Advancing to step 9:
When dividing 410 by 561, we get 0 with a remainder of 410.
The next digit of our result is 0. 
Result so far: 114588.0
Subtracting 0 from 410 leaves us with 410.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4100, and continue the process.

Going ahead to step 10:
When dividing 4100 by 561, we get 7 with a remainder of 173.
The next digit of our result is 7. 
Result so far: 114588.07
Subtract 3927 from 4100 to get 173.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1730, and continue the process.

Step 11:
The number 561 fits into 1730 3 times, leaving a remainder of 47.
The next digit of our result is 3. 
Result so far: 114588.073
If we subtract 1683 from 1730, we get 47.
Since there are no more digits in the dividend, we add a zero to the remainder making it 470, and continue the process.

Going ahead to step 12:
If we divide 470 by 561, we get 0 and a remainder of 470.
The next digit of our result is 0. 
Result so far: 114588.073
The remainder is 470 after subtracting 0 from 470.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4700, and continue the process.

On to step 13:
The number 561 fits into 4700 8 times, leaving a remainder of 212.
Put 8 as the next digit of the answer. 
Result so far: 114588.07308
If we subtract 4488 from 4700, we get 212.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2120, and continue the process.

Going ahead to step 14:
2120 divided by 561 is 3 with a remainder of 437.
The next digit of our result is 3. 
Result so far: 114588.073083
If we subtract 1683 from 2120, we get 437.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4370, and continue the process.

Step 15:
4370 divided by 561 is 7 with a remainder of 443.
The number 7 becomes the next digit in our result. 
Result so far: 114588.0730837
Subtract 3927 from 4370 to get 443.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4430, and continue the process.

Moving on to step 16:
561 can be fit into 4430 7 times, resulting in a remainder of 503.
The number 7 becomes the next digit in our result. 
Result so far: 114588.07308377
If we subtract 3927 from 4430, we get 503.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5030, and continue the process.

Our division results in 114588.07308377 with a remaining 5.03e-07.