We look at the division of 369938 by 66 
The aim is to understand the frequency of 66 in 369938.

On to step 1:
3 divided by 66 is 0 with a remainder of 3.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 3 leaves us with 3.
Append the next digit (6) from the dividend to 3 and continue with: 36 / 66

Step 2:
36 divided by 66 is 0 with a remainder of 36.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 36 and we're left with 36.
Bring next digit (9) of the dividend behind the 36 and repeat the process: 369 / 66

Moving on to step 3:
66 can be fit into 369 5 times, resulting in a remainder of 39.
Use 5 as the next digit of our solution. 
Result so far: 5.0
Subtract 330 from 369 to get 39.
Take the next digit (9) from the dividend and append it to 39, then repeat: 399 / 66

Going ahead to step 4:
If we divide 399 by 66, we get 6 and a remainder of 3.
Use 6 as the next digit of our solution. 
Result so far: 56.0
Subtract 396 from 399 to get 3.
Take the next digit (3) from the dividend and append it to 3, then repeat: 33 / 66

Let's proceed to step 5:
33 divided by 66 is 0 with a remainder of 33.
Use 0 as the next digit of our solution. 
Result so far: 560.0
Subtracting 0 from 33 leaves us with 33.
Take the next digit (8) from the dividend and append it to 33, then repeat: 338 / 66

On to step 6:
The number 66 fits into 338 5 times, leaving a remainder of 8.
Put 5 as the next digit of the answer. 
Result so far: 5605.0
Deduct 330 from 338 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.

Moving on to step 7:
If we divide 80 by 66, we get 1 and a remainder of 14.
Record the quotient 1 as the next digit in the result. 
Result so far: 5605.1
Deduct 66 from 80 and we're left 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 8:
The number 66 fits into 140 2 times, leaving a remainder of 8.
Put 2 as the next digit of the answer. 
Result so far: 5605.12
If we take 132 away from 140, we end up 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.

Going ahead to step 9:
When dividing 80 by 66, we get 1 with a remainder of 14.
Put 1 as the next digit of the answer. 
Result so far: 5605.121
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.

Let's proceed to step 10:
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: 5605.1212
Subtract 132 from 140 to get 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 11:
66 goes into 80 1 times with a remainder of 14.
Write down 1 as next digit of the result. 
Result so far: 5605.12121
The remainder is 14 after subtracting 66 from 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Moving on to step 12:
If we divide 140 by 66, we get 2 and a remainder of 8.
Write down 2 as next digit of the result. 
Result so far: 5605.121212
Subtract 132 from 140 to get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Going ahead to step 13:
66 can be fit into 80 1 times, resulting in a remainder of 14.
Put 1 as the next digit of the answer. 
Result so far: 5605.1212121
The remainder is 14 after subtracting 66 from 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Let's proceed to step 14:
66 goes into 140 2 times with a remainder of 8.
Record the quotient 2 as the next digit in the result. 
Result so far: 5605.12121212
The remainder is 8 after subtracting 132 from 140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

The final result is 5605.12121212 with a remainder of 8e-09.