We're dividing 352860 by 66 
The aim is to understand the frequency of 66 in 352860.

Let's proceed to step 1:
When dividing 3 by 66, we get 0 with a remainder of 3.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 3 to get 3.
Include the next digit (5) from the dividend after 3, then repeat: 35 / 66

Let's proceed to step 2:
66 can be fit into 35 0 times, resulting in a remainder of 35.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 35 and we're left with 35.
Fetch the next digit (2) from the dividend, attach it to 35 and continue: 352 / 66

On to step 3:
66 can be fit into 352 5 times, resulting in a remainder of 22.
Write down 5 as next digit of the result. 
Result so far: 5.0
If we take 330 away from 352, we end up with 22.
Append the next digit (8) from the dividend to 22 and continue with: 228 / 66

Step 4:
The number 66 fits into 228 3 times, leaving a remainder of 30.
Record the quotient 3 as the next digit in the result. 
Result so far: 53.0
Subtracting 198 from 228 leaves us with 30.
Fetch the next digit (6) from the dividend, attach it to 30 and continue: 306 / 66

Moving on to step 5:
66 can be fit into 306 4 times, resulting in a remainder of 42.
Record the quotient 4 as the next digit in the result. 
Result so far: 534.0
Subtracting 264 from 306 leaves us with 42.
Fetch the next digit (0) from the dividend, attach it to 42 and continue: 420 / 66

On to step 6:
420 divided by 66 is 6 with a remainder of 24.
The next digit of our result is 6. 
Result so far: 5346.0
The remainder is 24 after subtracting 396 from 420.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Let's proceed to step 7:
When dividing 240 by 66, we get 3 with a remainder of 42.
The number 3 becomes the next digit in our result. 
Result so far: 5346.3
The remainder is 42 after subtracting 198 from 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Step 8:
66 can be fit into 420 6 times, resulting in a remainder of 24.
Record the quotient 6 as the next digit in the result. 
Result so far: 5346.36
The remainder is 24 after subtracting 396 from 420.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Moving on to step 9:
The number 66 fits into 240 3 times, leaving a remainder of 42.
Use 3 as the next digit of our solution. 
Result so far: 5346.363
If we take 198 away from 240, we end up with 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Let's proceed to step 10:
If we divide 420 by 66, we get 6 and a remainder of 24.
The next digit of our result is 6. 
Result so far: 5346.3636
Subtract 396 from 420 to get 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Let's proceed to step 11:
If we divide 240 by 66, we get 3 and a remainder of 42.
Write down 3 as next digit of the result. 
Result so far: 5346.36363
Subtracting 198 from 240 leaves us with 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Going ahead to step 12:
When dividing 420 by 66, we get 6 with a remainder of 24.
Use 6 as the next digit of our solution. 
Result so far: 5346.363636
The remainder is 24 after subtracting 396 from 420.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Moving on to step 13:
If we divide 240 by 66, we get 3 and a remainder of 42.
The next digit of our result is 3. 
Result so far: 5346.3636363
If we take 198 away from 240, we end up with 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Moving on to step 14:
If we divide 420 by 66, we get 6 and a remainder of 24.
The number 6 becomes the next digit in our result. 
Result so far: 5346.36363636
Subtracting 396 from 420 leaves us with 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

In conclusion, the division gives 5346.36363636 with a balance of 2.4e-08.