979839 divided by 66 
The aim is to understand the frequency of 66 in 979839.

Advancing to step 1:
66 goes into 9 0 times with a remainder of 9.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 9 leaves us with 9.
Take the next digit (7) from the dividend and append it to 9, then repeat: 97 / 66

Let's proceed to step 2:
97 divided by 66 is 1 with a remainder of 31.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Deduct 66 from 97 and we're left with 31.
Take the next digit (9) from the dividend and append it to 31, then repeat: 319 / 66

Step 3:
66 can be fit into 319 4 times, resulting in a remainder of 55.
Use 4 as the next digit of our solution. 
Result so far: 14.0
If we subtract 264 from 319, we get 55.
Take the next digit (8) from the dividend and append it to 55, then repeat: 558 / 66

Let's proceed to step 4:
If we divide 558 by 66, we get 8 and a remainder of 30.
Record the quotient 8 as the next digit in the result. 
Result so far: 148.0
If we subtract 528 from 558, we get 30.
Take the next digit (3) from the dividend and append it to 30, then repeat: 303 / 66

Going ahead to step 5:
66 goes into 303 4 times with a remainder of 39.
Use 4 as the next digit of our solution. 
Result so far: 1484.0
Deduct 264 from 303 and we're left with 39.
Fetch the next digit (9) from the dividend, attach it to 39 and continue: 399 / 66

Moving on to step 6:
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: 14846.0
If we take 396 away from 399, we end up with 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Going ahead to step 7:
The number 66 fits into 30 0 times, leaving a remainder of 30.
Put 0 as the next digit of the answer. 
Result so far: 14846.0
If we subtract 0 from 30, we get 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Going ahead to step 8:
If we divide 300 by 66, we get 4 and a remainder of 36.
The next digit of our result is 4. 
Result so far: 14846.04
If we take 264 away from 300, we end up with 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Moving on to step 9:
66 goes into 360 5 times with a remainder of 30.
Use 5 as the next digit of our solution. 
Result so far: 14846.045
Subtracting 330 from 360 leaves us with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Let's proceed to step 10:
If we divide 300 by 66, we get 4 and a remainder of 36.
Use 4 as the next digit of our solution. 
Result so far: 14846.0454
If we subtract 264 from 300, we get 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Step 11:
360 divided by 66 is 5 with a remainder of 30.
Put 5 as the next digit of the answer. 
Result so far: 14846.04545
Subtract 330 from 360 to get 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Moving on to step 12:
66 goes into 300 4 times with a remainder of 36.
Record the quotient 4 as the next digit in the result. 
Result so far: 14846.045454
If we subtract 264 from 300, we get 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Let's proceed to step 13:
When dividing 360 by 66, we get 5 with a remainder of 30.
Put 5 as the next digit of the answer. 
Result so far: 14846.0454545
If we take 330 away from 360, we end up with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

On to step 14:
66 can be fit into 300 4 times, resulting in a remainder of 36.
Write down 4 as next digit of the result. 
Result so far: 14846.04545454
If we subtract 264 from 300, we get 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

The final result is 14846.04545454 with a remainder of 3.6e-08.