We divide 781658 by 66
The aim is to understand the frequency of 66 in 781658.

Going ahead 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
Subtracting 0 from 7 leaves us with 7.
Grab the next digit (8) from the dividend, add it to 7, then carry on: 78 / 66

Moving on to step 2:
66 can be fit into 78 1 times, resulting in a remainder of 12.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
If we subtract 66 from 78, we get 12.
Take the next digit (1) from the dividend and append it to 12, then repeat: 121 / 66

On to step 3:
66 goes into 121 1 times with a remainder of 55.
Use 1 as the next digit of our solution. 
Result so far: 11.0
If we subtract 66 from 121, we get 55.
Fetch the next digit (6) from the dividend, attach it to 55 and continue: 556 / 66

Going ahead to step 4:
When dividing 556 by 66, we get 8 with a remainder of 28.
The number 8 becomes the next digit in our result. 
Result so far: 118.0
The remainder is 28 after subtracting 528 from 556.
Append the next digit (5) from the dividend to 28 and continue with: 285 / 66

Let's proceed to step 5:
285 divided by 66 is 4 with a remainder of 21.
The next digit of our result is 4. 
Result so far: 1184.0
Subtract 264 from 285 to get 21.
Grab the next digit (8) from the dividend, add it to 21, then carry on: 218 / 66

Going ahead to step 6:
When dividing 218 by 66, we get 3 with a remainder of 20.
Write down 3 as next digit of the result. 
Result so far: 11843.0
Subtracting 198 from 218 leaves us with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

On to step 7:
200 divided by 66 is 3 with a remainder of 2.
Record the quotient 3 as the next digit in the result. 
Result so far: 11843.3
Subtracting 198 from 200 leaves us with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Advancing to step 8:
If we divide 20 by 66, we get 0 and a remainder of 20.
Put 0 as the next digit of the answer. 
Result so far: 11843.3
Subtracting 0 from 20 leaves us with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Step 9:
The number 66 fits into 200 3 times, leaving a remainder of 2.
The next digit of our result is 3. 
Result so far: 11843.303
If we take 198 away from 200, we end up with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Step 10:
The number 66 fits into 20 0 times, leaving a remainder of 20.
Use 0 as the next digit of our solution. 
Result so far: 11843.303
Subtract 0 from 20 to get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Step 11:
If we divide 200 by 66, we get 3 and a remainder of 2.
Write down 3 as next digit of the result. 
Result so far: 11843.30303
Subtract 198 from 200 to get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

On to step 12:
66 can be fit into 20 0 times, resulting in a remainder of 20.
The next digit of our result is 0. 
Result so far: 11843.30303
If we subtract 0 from 20, we get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Let's proceed to step 13:
66 can be fit into 200 3 times, resulting in a remainder of 2.
Put 3 as the next digit of the answer. 
Result so far: 11843.3030303
The remainder is 2 after subtracting 198 from 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Moving on to step 14:
When dividing 20 by 66, we get 0 with a remainder of 20.
The number 0 becomes the next digit in our result. 
Result so far: 11843.3030303
Subtract 0 from 20 to get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

After the division, we end up with 11843.3030303 and a remainder of 2e-08.