We're dividing 10766902 by 561 
The aim is to understand the frequency of 561 in 10766902.

Step 1:
The number 561 fits into 1 0 times, leaving a remainder of 1.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 1 and we're left with 1.
Take the next digit (0) from the dividend and append it to 1, then repeat: 10 / 561

Going ahead to step 2:
When dividing 10 by 561, we get 0 with a remainder of 10.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 10 after subtracting 0 from 10.
Take the next digit (7) from the dividend and append it to 10, then repeat: 107 / 561

Going ahead to step 3:
561 goes into 107 0 times with a remainder of 107.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 107 to get 107.
Append the next digit (6) from the dividend to 107 and continue with: 1076 / 561

On to step 4:
561 goes into 1076 1 times with a remainder of 515.
Use 1 as the next digit of our solution. 
Result so far: 1.0
The remainder is 515 after subtracting 561 from 1076.
Include the next digit (6) from the dividend after 515, then repeat: 5156 / 561

Going ahead to step 5:
When dividing 5156 by 561, we get 9 with a remainder of 107.
Write down 9 as next digit of the result. 
Result so far: 19.0
Deduct 5049 from 5156 and we're left with 107.
Take the next digit (9) from the dividend and append it to 107, then repeat: 1079 / 561

Let's proceed to step 6:
If we divide 1079 by 561, we get 1 and a remainder of 518.
The number 1 becomes the next digit in our result. 
Result so far: 191.0
If we subtract 561 from 1079, we get 518.
Include the next digit (0) from the dividend after 518, then repeat: 5180 / 561

Moving on to step 7:
When dividing 5180 by 561, we get 9 with a remainder of 131.
The number 9 becomes the next digit in our result. 
Result so far: 1919.0
If we subtract 5049 from 5180, we get 131.
Grab the next digit (2) from the dividend, add it to 131, then carry on: 1312 / 561

Let's proceed to step 8:
When dividing 1312 by 561, we get 2 with a remainder of 190.
The number 2 becomes the next digit in our result. 
Result so far: 19192.0
If we subtract 1122 from 1312, 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.

On to step 9:
561 can be fit into 1900 3 times, resulting in a remainder of 217.
Put 3 as the next digit of the answer. 
Result so far: 19192.3
Subtracting 1683 from 1900 leaves us with 217.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2170, and continue the process.

Advancing to step 10:
If we divide 2170 by 561, we get 3 and a remainder of 487.
Record the quotient 3 as the next digit in the result. 
Result so far: 19192.33
If we take 1683 away from 2170, we end up with 487.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4870, and continue the process.

The quotient of the division is 19192.33, and the remainder is 0.487.