Let's divide 473089 by 90
The aim is to understand the frequency of 90 in 473089.

On to step 1:
When dividing 4 by 90, we get 0 with a remainder of 4.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 4, we end up with 4.
Take the next digit (7) from the dividend and append it to 4, then repeat: 47 / 90

On to step 2:
47 divided by 90 is 0 with a remainder of 47.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 47 leaves us with 47.
Append the next digit (3) from the dividend to 47 and continue with: 473 / 90

Advancing to step 3:
The number 90 fits into 473 5 times, leaving a remainder of 23.
Write down 5 as next digit of the result. 
Result so far: 5.0
If we subtract 450 from 473, we get 23.
Fetch the next digit (0) from the dividend, attach it to 23 and continue: 230 / 90

Step 4:
90 goes into 230 2 times with a remainder of 50.
Put 2 as the next digit of the answer. 
Result so far: 52.0
Subtract 180 from 230 to get 50.
Take the next digit (8) from the dividend and append it to 50, then repeat: 508 / 90

Step 5:
90 goes into 508 5 times with a remainder of 58.
The next digit of our result is 5. 
Result so far: 525.0
Subtracting 450 from 508 leaves us with 58.
Append the next digit (9) from the dividend to 58 and continue with: 589 / 90

Going ahead to step 6:
90 goes into 589 6 times with a remainder of 49.
Put 6 as the next digit of the answer. 
Result so far: 5256.0
Deduct 540 from 589 and we're left with 49.
Since there are no more digits in the dividend, we add a zero to the remainder making it 490, and continue the process.

Step 7:
90 goes into 490 5 times with a remainder of 40.
Write down 5 as next digit of the result. 
Result so far: 5256.5
Subtract 450 from 490 to get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Moving on to step 8:
The number 90 fits into 400 4 times, leaving a remainder of 40.
The number 4 becomes the next digit in our result. 
Result so far: 5256.54
The remainder is 40 after subtracting 360 from 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Going ahead to step 9:
The number 90 fits into 400 4 times, leaving a remainder of 40.
The next digit of our result is 4. 
Result so far: 5256.544
If we take 360 away from 400, we end up with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

The final result is 5256.544 with a remainder of 0.004.