We're dividing 352848 by 90 
The aim is to understand the frequency of 90 in 352848.

Step 1:
3 divided by 90 is 0 with a remainder of 3.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 3 after subtracting 0 from 3.
Append the next digit (5) from the dividend to 3 and continue with: 35 / 90

On to step 2:
If we divide 35 by 90, we get 0 and a remainder of 35.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 35 leaves us with 35.
Grab the next digit (2) from the dividend, add it to 35, then carry on: 352 / 90

On to step 3:
90 can be fit into 352 3 times, resulting in a remainder of 82.
Use 3 as the next digit of our solution. 
Result so far: 3.0
Deduct 270 from 352 and we're left with 82.
Fetch the next digit (8) from the dividend, attach it to 82 and continue: 828 / 90

Let's proceed to step 4:
When dividing 828 by 90, we get 9 with a remainder of 18.
The next digit of our result is 9. 
Result so far: 39.0
If we take 810 away from 828, we end up with 18.
Include the next digit (4) from the dividend after 18, then repeat: 184 / 90

Going ahead to step 5:
If we divide 184 by 90, we get 2 and a remainder of 4.
Write down 2 as next digit of the result. 
Result so far: 392.0
The remainder is 4 after subtracting 180 from 184.
Append the next digit (8) from the dividend to 4 and continue with: 48 / 90

On to step 6:
48 divided by 90 is 0 with a remainder of 48.
Put 0 as the next digit of the answer. 
Result so far: 3920.0
Subtracting 0 from 48 leaves us with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Step 7:
The number 90 fits into 480 5 times, leaving a remainder of 30.
Write down 5 as next digit of the result. 
Result so far: 3920.5
If we subtract 450 from 480, we get 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Step 8:
90 goes into 300 3 times with a remainder of 30.
Use 3 as the next digit of our solution. 
Result so far: 3920.53
Subtracting 270 from 300 leaves us with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Let's proceed to step 9:
300 divided by 90 is 3 with a remainder of 30.
Use 3 as the next digit of our solution. 
Result so far: 3920.533
Subtracting 270 from 300 leaves us with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

The quotient of the division is 3920.533, and the remainder is 0.003.