We look at the division of 463505 by 90 
The aim is to understand the frequency of 90 in 463505.

Step 1:
90 can be fit into 4 0 times, resulting in a remainder of 4.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 4 and we're left with 4.
Bring next digit (6) of the dividend behind the 4 and repeat the process: 46 / 90

Step 2:
The number 90 fits into 46 0 times, leaving a remainder of 46.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 46, we get 46.
Take the next digit (3) from the dividend and append it to 46, then repeat: 463 / 90

On to step 3:
90 goes into 463 5 times with a remainder of 13.
The next digit of our result is 5. 
Result so far: 5.0
If we subtract 450 from 463, we get 13.
Bring next digit (5) of the dividend behind the 13 and repeat the process: 135 / 90

Step 4:
90 goes into 135 1 times with a remainder of 45.
The number 1 becomes the next digit in our result. 
Result so far: 51.0
The remainder is 45 after subtracting 90 from 135.
Include the next digit (0) from the dividend after 45, then repeat: 450 / 90

Going ahead to step 5:
When dividing 450 by 90, we get 5 with a remainder of 0.
Put 5 as the next digit of the answer. 
Result so far: 515.0
If we subtract 450 from 450, we get 0.
Append the next digit (5) from the dividend to 0 and continue with: 5 / 90

Advancing to step 6:
The number 90 fits into 5 0 times, leaving a remainder of 5.
Use 0 as the next digit of our solution. 
Result so far: 5150.0
If we subtract 0 from 5, we get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Advancing to step 7:
The number 90 fits into 50 0 times, leaving a remainder of 50.
The next digit of our result is 0. 
Result so far: 5150.0
If we take 0 away from 50, we end up with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Going ahead to step 8:
The number 90 fits into 500 5 times, leaving a remainder of 50.
Write down 5 as next digit of the result. 
Result so far: 5150.05
The remainder is 50 after subtracting 450 from 500.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Advancing to step 9:
If we divide 500 by 90, we get 5 and a remainder of 50.
The number 5 becomes the next digit in our result. 
Result so far: 5150.055
If we subtract 450 from 500, we get 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

In conclusion, the division gives 5150.055 with a balance of 0.005.