880563 divided by 66 
The aim is to understand the frequency of 66 in 880563.

Going ahead to step 1:
66 can be fit into 8 0 times, resulting in a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Grab the next digit (8) from the dividend, add it to 8, then carry on: 88 / 66

Moving on to step 2:
The number 66 fits into 88 1 times, leaving a remainder of 22.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Subtract 66 from 88 to get 22.
Include the next digit (0) from the dividend after 22, then repeat: 220 / 66

Going ahead to step 3:
If we divide 220 by 66, we get 3 and a remainder of 22.
The number 3 becomes the next digit in our result. 
Result so far: 13.0
If we take 198 away from 220, we end up with 22.
Fetch the next digit (5) from the dividend, attach it to 22 and continue: 225 / 66

Moving on to step 4:
The number 66 fits into 225 3 times, leaving a remainder of 27.
Write down 3 as next digit of the result. 
Result so far: 133.0
Deduct 198 from 225 and we're left with 27.
Take the next digit (6) from the dividend and append it to 27, then repeat: 276 / 66

Going ahead to step 5:
276 divided by 66 is 4 with a remainder of 12.
Record the quotient 4 as the next digit in the result. 
Result so far: 1334.0
If we subtract 264 from 276, we get 12.
Take the next digit (3) from the dividend and append it to 12, then repeat: 123 / 66

Going ahead to step 6:
When dividing 123 by 66, we get 1 with a remainder of 57.
Record the quotient 1 as the next digit in the result. 
Result so far: 13341.0
If we subtract 66 from 123, we get 57.
Since there are no more digits in the dividend, we add a zero to the remainder making it 570, and continue the process.

Let's proceed to step 7:
66 can be fit into 570 8 times, resulting in a remainder of 42.
The number 8 becomes the next digit in our result. 
Result so far: 13341.8
Deduct 528 from 570 and we're left with 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

On to step 8:
If we divide 420 by 66, we get 6 and a remainder of 24.
Use 6 as the next digit of our solution. 
Result so far: 13341.86
The remainder is 24 after subtracting 396 from 420.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Let's proceed to step 9:
When dividing 240 by 66, we get 3 with a remainder of 42.
Record the quotient 3 as the next digit in the result. 
Result so far: 13341.863
The remainder is 42 after subtracting 198 from 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Let's proceed to step 10:
When dividing 420 by 66, we get 6 with a remainder of 24.
Record the quotient 6 as the next digit in the result. 
Result so far: 13341.8636
The remainder is 24 after subtracting 396 from 420.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Let's proceed to step 11:
If we divide 240 by 66, we get 3 and a remainder of 42.
Use 3 as the next digit of our solution. 
Result so far: 13341.86363
If we take 198 away from 240, we end up with 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Moving on to step 12:
The number 66 fits into 420 6 times, leaving a remainder of 24.
Write down 6 as next digit of the result. 
Result so far: 13341.863636
The remainder is 24 after subtracting 396 from 420.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

On to step 13:
66 goes into 240 3 times with a remainder of 42.
Record the quotient 3 as the next digit in the result. 
Result so far: 13341.8636363
Subtract 198 from 240 to get 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Advancing to step 14:
420 divided by 66 is 6 with a remainder of 24.
Record the quotient 6 as the next digit in the result. 
Result so far: 13341.86363636
Deduct 396 from 420 and we're left with 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

The final outcome is 13341.86363636, with a leftover of 2.4e-08.