Let's divide 839600 by 66
The aim is to understand the frequency of 66 in 839600.

Advancing to step 1:
If we divide 8 by 66, we get 0 and a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Append the next digit (3) from the dividend to 8 and continue with: 83 / 66

Let's proceed to step 2:
66 can be fit into 83 1 times, resulting in a remainder of 17.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Subtract 66 from 83 to get 17.
Take the next digit (9) from the dividend and append it to 17, then repeat: 179 / 66

On to step 3:
66 can be fit into 179 2 times, resulting in a remainder of 47.
Put 2 as the next digit of the answer. 
Result so far: 12.0
Subtract 132 from 179 to get 47.
Fetch the next digit (6) from the dividend, attach it to 47 and continue: 476 / 66

Going ahead to step 4:
66 can be fit into 476 7 times, resulting in a remainder of 14.
Use 7 as the next digit of our solution. 
Result so far: 127.0
Deduct 462 from 476 and we're left with 14.
Fetch the next digit (0) from the dividend, attach it to 14 and continue: 140 / 66

On to step 5:
The number 66 fits into 140 2 times, leaving a remainder of 8.
Write down 2 as next digit of the result. 
Result so far: 1272.0
If we subtract 132 from 140, we get 8.
Include the next digit (0) from the dividend after 8, then repeat: 80 / 66

Going ahead to step 6:
If we divide 80 by 66, we get 1 and a remainder of 14.
Record the quotient 1 as the next digit in the result. 
Result so far: 12721.0
If we subtract 66 from 80, we get 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Let's proceed to step 7:
When dividing 140 by 66, we get 2 with a remainder of 8.
The number 2 becomes the next digit in our result. 
Result so far: 12721.2
Subtract 132 from 140 to get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Advancing to step 8:
When dividing 80 by 66, we get 1 with a remainder of 14.
Write down 1 as next digit of the result. 
Result so far: 12721.21
Subtracting 66 from 80 leaves us with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Moving on to step 9:
The number 66 fits into 140 2 times, leaving a remainder of 8.
Record the quotient 2 as the next digit in the result. 
Result so far: 12721.212
Subtract 132 from 140 to get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Step 10:
If we divide 80 by 66, we get 1 and a remainder of 14.
Put 1 as the next digit of the answer. 
Result so far: 12721.2121
Subtracting 66 from 80 leaves us with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Step 11:
When dividing 140 by 66, we get 2 with a remainder of 8.
Record the quotient 2 as the next digit in the result. 
Result so far: 12721.21212
The remainder is 8 after subtracting 132 from 140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Going ahead to step 12:
When dividing 80 by 66, we get 1 with a remainder of 14.
Write down 1 as next digit of the result. 
Result so far: 12721.212121
If we take 66 away from 80, we end up with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Let's proceed to step 13:
66 goes into 140 2 times with a remainder of 8.
Write down 2 as next digit of the result. 
Result so far: 12721.2121212
The remainder is 8 after subtracting 132 from 140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Moving on to step 14:
The number 66 fits into 80 1 times, leaving a remainder of 14.
Use 1 as the next digit of our solution. 
Result so far: 12721.21212121
If we subtract 66 from 80, we get 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Our division results in 12721.21212121 with a remaining 1.4e-08.