Let's divide 784391 by 66
The aim is to understand the frequency of 66 in 784391.

Advancing to step 1:
66 goes into 7 0 times with a remainder of 7.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 7, we end up with 7.
Include the next digit (8) from the dividend after 7, then repeat: 78 / 66

On to step 2:
78 divided by 66 is 1 with a remainder of 12.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
The remainder is 12 after subtracting 66 from 78.
Fetch the next digit (4) from the dividend, attach it to 12 and continue: 124 / 66

Step 3:
When dividing 124 by 66, we get 1 with a remainder of 58.
Put 1 as the next digit of the answer. 
Result so far: 11.0
If we subtract 66 from 124, we get 58.
Grab the next digit (3) from the dividend, add it to 58, then carry on: 583 / 66

Step 4:
66 goes into 583 8 times with a remainder of 55.
Use 8 as the next digit of our solution. 
Result so far: 118.0
If we subtract 528 from 583, we get 55.
Fetch the next digit (9) from the dividend, attach it to 55 and continue: 559 / 66

Advancing to step 5:
When dividing 559 by 66, we get 8 with a remainder of 31.
Put 8 as the next digit of the answer. 
Result so far: 1188.0
If we take 528 away from 559, we end up with 31.
Fetch the next digit (1) from the dividend, attach it to 31 and continue: 311 / 66

Advancing to step 6:
311 divided by 66 is 4 with a remainder of 47.
Write down 4 as next digit of the result. 
Result so far: 11884.0
The remainder is 47 after subtracting 264 from 311.
Since there are no more digits in the dividend, we add a zero to the remainder making it 470, and continue the process.

Going ahead to step 7:
470 divided by 66 is 7 with a remainder of 8.
Record the quotient 7 as the next digit in the result. 
Result so far: 11884.7
Subtracting 462 from 470 leaves us with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

On to step 8:
80 divided by 66 is 1 with a remainder of 14.
The next digit of our result is 1. 
Result so far: 11884.71
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.

Going ahead to step 9:
66 can be fit into 140 2 times, resulting in a remainder of 8.
Put 2 as the next digit of the answer. 
Result so far: 11884.712
Deduct 132 from 140 and we're left with 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:
The number 66 fits into 80 1 times, leaving a remainder of 14.
The next digit of our result is 1. 
Result so far: 11884.7121
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.

Step 11:
If we divide 140 by 66, we get 2 and a remainder of 8.
Put 2 as the next digit of the answer. 
Result so far: 11884.71212
Deduct 132 from 140 and we're left with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Let's proceed to step 12:
If we divide 80 by 66, we get 1 and a remainder of 14.
Use 1 as the next digit of our solution. 
Result so far: 11884.712121
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.

Advancing to step 13:
66 can be fit into 140 2 times, resulting in a remainder of 8.
Write down 2 as next digit of the result. 
Result so far: 11884.7121212
Subtracting 132 from 140 leaves us with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

On to step 14:
If we divide 80 by 66, we get 1 and a remainder of 14.
Write down 1 as next digit of the result. 
Result so far: 11884.71212121
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.

The final result is 11884.71212121 with a remainder of 1.4e-08.