We're dividing 869379 by 66 
The aim is to understand the frequency of 66 in 869379.

On to step 1:
66 goes into 8 0 times with a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Append the next digit (6) from the dividend to 8 and continue with: 86 / 66

Let's proceed to step 2:
The number 66 fits into 86 1 times, leaving a remainder of 20.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
If we take 66 away from 86, we end up with 20.
Bring next digit (9) of the dividend behind the 20 and repeat the process: 209 / 66

Step 3:
The number 66 fits into 209 3 times, leaving a remainder of 11.
Write down 3 as next digit of the result. 
Result so far: 13.0
Subtract 198 from 209 to get 11.
Bring next digit (3) of the dividend behind the 11 and repeat the process: 113 / 66

Let's proceed to step 4:
66 can be fit into 113 1 times, resulting in a remainder of 47.
Write down 1 as next digit of the result. 
Result so far: 131.0
Subtracting 66 from 113 leaves us with 47.
Grab the next digit (7) from the dividend, add it to 47, then carry on: 477 / 66

Going ahead to step 5:
When dividing 477 by 66, we get 7 with a remainder of 15.
The number 7 becomes the next digit in our result. 
Result so far: 1317.0
If we subtract 462 from 477, we get 15.
Take the next digit (9) from the dividend and append it to 15, then repeat: 159 / 66

On to step 6:
If we divide 159 by 66, we get 2 and a remainder of 27.
The next digit of our result is 2. 
Result so far: 13172.0
The remainder is 27 after subtracting 132 from 159.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

Going ahead to step 7:
66 goes into 270 4 times with a remainder of 6.
Write down 4 as next digit of the result. 
Result so far: 13172.4
Deduct 264 from 270 and we're left with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Advancing to step 8:
66 can be fit into 60 0 times, resulting in a remainder of 60.
The next digit of our result is 0. 
Result so far: 13172.4
The remainder is 60 after subtracting 0 from 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Going ahead to step 9:
66 goes into 600 9 times with a remainder of 6.
Use 9 as the next digit of our solution. 
Result so far: 13172.409
If we subtract 594 from 600, we get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

On to step 10:
60 divided by 66 is 0 with a remainder of 60.
Put 0 as the next digit of the answer. 
Result so far: 13172.409
Subtract 0 from 60 to get 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Advancing to step 11:
600 divided by 66 is 9 with a remainder of 6.
Write down 9 as next digit of the result. 
Result so far: 13172.40909
Deduct 594 from 600 and we're left with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Let's proceed to step 12:
When dividing 60 by 66, we get 0 with a remainder of 60.
The number 0 becomes the next digit in our result. 
Result so far: 13172.40909
Deduct 0 from 60 and we're left with 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Going ahead to step 13:
If we divide 600 by 66, we get 9 and a remainder of 6.
The number 9 becomes the next digit in our result. 
Result so far: 13172.4090909
If we subtract 594 from 600, we get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Moving on to step 14:
60 divided by 66 is 0 with a remainder of 60.
Use 0 as the next digit of our solution. 
Result so far: 13172.4090909
Subtracting 0 from 60 leaves us with 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

After the division, we end up with 13172.4090909 and a remainder of 6e-08.