6999881 ÷ 66 
The aim is to understand the frequency of 66 in 6999881.

Let's proceed to step 1:
6 divided by 66 is 0 with a remainder of 6.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Take the next digit (9) from the dividend and append it to 6, then repeat: 69 / 66

Moving on to step 2:
When dividing 69 by 66, we get 1 with a remainder of 3.
The next digit of our result is 1. 
Result so far: 1.0
Subtracting 66 from 69 leaves us with 3.
Append the next digit (9) from the dividend to 3 and continue with: 39 / 66

Moving on to step 3:
When dividing 39 by 66, we get 0 with a remainder of 39.
Use 0 as the next digit of our solution. 
Result so far: 10.0
Subtract 0 from 39 to get 39.
Take the next digit (9) from the dividend and append it to 39, then repeat: 399 / 66

Step 4:
When dividing 399 by 66, we get 6 with a remainder of 3.
Write down 6 as next digit of the result. 
Result so far: 106.0
The remainder is 3 after subtracting 396 from 399.
Fetch the next digit (8) from the dividend, attach it to 3 and continue: 38 / 66

Moving on to step 5:
66 goes into 38 0 times with a remainder of 38.
Use 0 as the next digit of our solution. 
Result so far: 1060.0
If we take 0 away from 38, we end up with 38.
Fetch the next digit (8) from the dividend, attach it to 38 and continue: 388 / 66

Let's proceed to step 6:
66 goes into 388 5 times with a remainder of 58.
The next digit of our result is 5. 
Result so far: 10605.0
If we subtract 330 from 388, we get 58.
Include the next digit (1) from the dividend after 58, then repeat: 581 / 66

Advancing to step 7:
581 divided by 66 is 8 with a remainder of 53.
The next digit of our result is 8. 
Result so far: 106058.0
Subtract 528 from 581 to get 53.
Since there are no more digits in the dividend, we add a zero to the remainder making it 530, and continue the process.

Let's proceed to step 8:
530 divided by 66 is 8 with a remainder of 2.
Record the quotient 8 as the next digit in the result. 
Result so far: 106058.8
Subtract 528 from 530 to get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Let's proceed to step 9:
The number 66 fits into 20 0 times, leaving a remainder of 20.
The number 0 becomes the next digit in our result. 
Result so far: 106058.8
Subtract 0 from 20 to get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Going ahead to step 10:
200 divided by 66 is 3 with a remainder of 2.
The next digit of our result is 3. 
Result so far: 106058.803
If we subtract 198 from 200, we get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Let's proceed to step 11:
The number 66 fits into 20 0 times, leaving a remainder of 20.
Record the quotient 0 as the next digit in the result. 
Result so far: 106058.803
Subtract 0 from 20 to get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Let's proceed to step 12:
200 divided by 66 is 3 with a remainder of 2.
Put 3 as the next digit of the answer. 
Result so far: 106058.80303
Subtract 198 from 200 to get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Going ahead to step 13:
If we divide 20 by 66, we get 0 and a remainder of 20.
Write down 0 as next digit of the result. 
Result so far: 106058.80303
The remainder is 20 after subtracting 0 from 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Let's proceed to step 14:
66 goes into 200 3 times with a remainder of 2.
Write down 3 as next digit of the result. 
Result so far: 106058.8030303
Subtract 198 from 200 to get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

On to step 15:
When dividing 20 by 66, we get 0 with a remainder of 20.
Record the quotient 0 as the next digit in the result. 
Result so far: 106058.8030303
Subtract 0 from 20 to get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

In conclusion, the division gives 106058.8030303 with a balance of 2e-08.