We divide 386191 by 66
The aim is to understand the frequency of 66 in 386191.

Going ahead to step 1:
3 divided by 66 is 0 with a remainder of 3.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 3 and we're left with 3.
Append the next digit (8) from the dividend to 3 and continue with: 38 / 66

Going ahead to step 2:
The number 66 fits into 38 0 times, leaving a remainder of 38.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 38, we get 38.
Take the next digit (6) from the dividend and append it to 38, then repeat: 386 / 66

On to step 3:
66 goes into 386 5 times with a remainder of 56.
The next digit of our result is 5. 
Result so far: 5.0
The remainder is 56 after subtracting 330 from 386.
Take the next digit (1) from the dividend and append it to 56, then repeat: 561 / 66

Going ahead to step 4:
If we divide 561 by 66, we get 8 and a remainder of 33.
The next digit of our result is 8. 
Result so far: 58.0
Subtract 528 from 561 to get 33.
Include the next digit (9) from the dividend after 33, then repeat: 339 / 66

Advancing to step 5:
66 can be fit into 339 5 times, resulting in a remainder of 9.
Record the quotient 5 as the next digit in the result. 
Result so far: 585.0
If we subtract 330 from 339, we get 9.
Append the next digit (1) from the dividend to 9 and continue with: 91 / 66

Moving on to step 6:
The number 66 fits into 91 1 times, leaving a remainder of 25.
Use 1 as the next digit of our solution. 
Result so far: 5851.0
The remainder is 25 after subtracting 66 from 91.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

On to step 7:
If we divide 250 by 66, we get 3 and a remainder of 52.
Write down 3 as next digit of the result. 
Result so far: 5851.3
The remainder is 52 after subtracting 198 from 250.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

Step 8:
When dividing 520 by 66, we get 7 with a remainder of 58.
The number 7 becomes the next digit in our result. 
Result so far: 5851.37
Subtract 462 from 520 to get 58.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

On to step 9:
66 can be fit into 580 8 times, resulting in a remainder of 52.
Record the quotient 8 as the next digit in the result. 
Result so far: 5851.378
The remainder is 52 after subtracting 528 from 580.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

Advancing to step 10:
66 goes into 520 7 times with a remainder of 58.
Put 7 as the next digit of the answer. 
Result so far: 5851.3787
If we take 462 away from 520, we end up with 58.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

Step 11:
66 can be fit into 580 8 times, resulting in a remainder of 52.
Use 8 as the next digit of our solution. 
Result so far: 5851.37878
If we subtract 528 from 580, we get 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

Advancing to step 12:
66 goes into 520 7 times with a remainder of 58.
The number 7 becomes the next digit in our result. 
Result so far: 5851.378787
If we take 462 away from 520, we end up with 58.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

Let's proceed to step 13:
The number 66 fits into 580 8 times, leaving a remainder of 52.
Use 8 as the next digit of our solution. 
Result so far: 5851.3787878
Subtract 528 from 580 to get 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

Going ahead to step 14:
66 goes into 520 7 times with a remainder of 58.
Record the quotient 7 as the next digit in the result. 
Result so far: 5851.37878787
If we subtract 462 from 520, we get 58.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

After the division, we end up with 5851.37878787 and a remainder of 5.8e-08.