778854 ÷ 66 
The aim is to understand the frequency of 66 in 778854.

Advancing to step 1:
7 divided by 66 is 0 with a remainder of 7.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 7 leaves us with 7.
Append the next digit (7) from the dividend to 7 and continue with: 77 / 66

Advancing to step 2:
If we divide 77 by 66, we get 1 and a remainder of 11.
The next digit of our result is 1. 
Result so far: 1.0
If we take 66 away from 77, we end up with 11.
Grab the next digit (8) from the dividend, add it to 11, then carry on: 118 / 66

Moving on to step 3:
The number 66 fits into 118 1 times, leaving a remainder of 52.
The next digit of our result is 1. 
Result so far: 11.0
If we take 66 away from 118, we end up with 52.
Bring next digit (8) of the dividend behind the 52 and repeat the process: 528 / 66

On to step 4:
When dividing 528 by 66, we get 8 with a remainder of 0.
The next digit of our result is 8. 
Result so far: 118.0
If we subtract 528 from 528, we get 0.
Bring next digit (5) of the dividend behind the 0 and repeat the process: 5 / 66

Let's proceed to step 5:
66 goes into 5 0 times with a remainder of 5.
Use 0 as the next digit of our solution. 
Result so far: 1180.0
Subtracting 0 from 5 leaves us with 5.
Grab the next digit (4) from the dividend, add it to 5, then carry on: 54 / 66

Advancing to step 6:
66 can be fit into 54 0 times, resulting in a remainder of 54.
The next digit of our result is 0. 
Result so far: 11800.0
If we subtract 0 from 54, we get 54.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

Let's proceed to step 7:
When dividing 540 by 66, we get 8 with a remainder of 12.
Write down 8 as next digit of the result. 
Result so far: 11800.8
Subtracting 528 from 540 leaves us with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Moving on to step 8:
When dividing 120 by 66, we get 1 with a remainder of 54.
Write down 1 as next digit of the result. 
Result so far: 11800.81
The remainder is 54 after subtracting 66 from 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

Going ahead to step 9:
66 goes into 540 8 times with a remainder of 12.
The number 8 becomes the next digit in our result. 
Result so far: 11800.818
Deduct 528 from 540 and we're left with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Let's proceed to step 10:
If we divide 120 by 66, we get 1 and a remainder of 54.
Record the quotient 1 as the next digit in the result. 
Result so far: 11800.8181
If we take 66 away from 120, we end up with 54.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

Let's proceed to step 11:
66 goes into 540 8 times with a remainder of 12.
Use 8 as the next digit of our solution. 
Result so far: 11800.81818
Subtracting 528 from 540 leaves us with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Moving on to step 12:
66 can be fit into 120 1 times, resulting in a remainder of 54.
Write down 1 as next digit of the result. 
Result so far: 11800.818181
Deduct 66 from 120 and we're left with 54.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

Advancing to step 13:
66 can be fit into 540 8 times, resulting in a remainder of 12.
Use 8 as the next digit of our solution. 
Result so far: 11800.8181818
The remainder is 12 after subtracting 528 from 540.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Going ahead to step 14:
120 divided by 66 is 1 with a remainder of 54.
Put 1 as the next digit of the answer. 
Result so far: 11800.81818181
Deduct 66 from 120 and we're left with 54.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

Our division results in 11800.81818181 with a remaining 5.4e-08.