63022883 divided by 90 
The aim is to understand the frequency of 90 in 63022883.

On to step 1:
6 divided by 90 is 0 with a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 6 after subtracting 0 from 6.
Append the next digit (3) from the dividend to 6 and continue with: 63 / 90

Advancing to step 2:
The number 90 fits into 63 0 times, leaving a remainder of 63.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 63 after subtracting 0 from 63.
Grab the next digit (0) from the dividend, add it to 63, then carry on: 630 / 90

Let's proceed to step 3:
90 can be fit into 630 7 times, resulting in a remainder of 0.
Put 7 as the next digit of the answer. 
Result so far: 7.0
Deduct 630 from 630 and we're left with 0.
Grab the next digit (2) from the dividend, add it to 0, then carry on: 2 / 90

Moving on to step 4:
2 divided by 90 is 0 with a remainder of 2.
Record the quotient 0 as the next digit in the result. 
Result so far: 70.0
The remainder is 2 after subtracting 0 from 2.
Take the next digit (2) from the dividend and append it to 2, then repeat: 22 / 90

Let's proceed to step 5:
22 divided by 90 is 0 with a remainder of 22.
Record the quotient 0 as the next digit in the result. 
Result so far: 700.0
Subtracting 0 from 22 leaves us with 22.
Append the next digit (8) from the dividend to 22 and continue with: 228 / 90

Going ahead to step 6:
If we divide 228 by 90, we get 2 and a remainder of 48.
Write down 2 as next digit of the result. 
Result so far: 7002.0
Deduct 180 from 228 and we're left with 48.
Include the next digit (8) from the dividend after 48, then repeat: 488 / 90

Step 7:
When dividing 488 by 90, we get 5 with a remainder of 38.
The next digit of our result is 5. 
Result so far: 70025.0
Subtracting 450 from 488 leaves us with 38.
Take the next digit (3) from the dividend and append it to 38, then repeat: 383 / 90

Moving on to step 8:
The number 90 fits into 383 4 times, leaving a remainder of 23.
Write down 4 as next digit of the result. 
Result so far: 700254.0
If we take 360 away from 383, we end up with 23.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

Moving on to step 9:
If we divide 230 by 90, we get 2 and a remainder of 50.
Use 2 as the next digit of our solution. 
Result so far: 700254.2
Deduct 180 from 230 and we're left 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.

Moving on to step 10:
If we divide 500 by 90, we get 5 and a remainder of 50.
Use 5 as the next digit of our solution. 
Result so far: 700254.25
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.

Step 11:
90 goes into 500 5 times with a remainder of 50.
The number 5 becomes the next digit in our result. 
Result so far: 700254.255
Deduct 450 from 500 and we're left 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.

The quotient of the division is 700254.255, and the remainder is 0.005.