We divide 511062 by 90
The aim is to understand the frequency of 90 in 511062.

Let's proceed to step 1:
90 goes into 5 0 times with a remainder of 5.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 5 and we're left with 5.
Take the next digit (1) from the dividend and append it to 5, then repeat: 51 / 90

On to step 2:
90 goes into 51 0 times with a remainder of 51.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 51, we end up with 51.
Bring next digit (1) of the dividend behind the 51 and repeat the process: 511 / 90

Going ahead to step 3:
90 goes into 511 5 times with a remainder of 61.
Use 5 as the next digit of our solution. 
Result so far: 5.0
Deduct 450 from 511 and we're left with 61.
Grab the next digit (0) from the dividend, add it to 61, then carry on: 610 / 90

Let's proceed to step 4:
When dividing 610 by 90, we get 6 with a remainder of 70.
Put 6 as the next digit of the answer. 
Result so far: 56.0
Subtract 540 from 610 to get 70.
Bring next digit (6) of the dividend behind the 70 and repeat the process: 706 / 90

On to step 5:
706 divided by 90 is 7 with a remainder of 76.
The number 7 becomes the next digit in our result. 
Result so far: 567.0
Subtract 630 from 706 to get 76.
Include the next digit (2) from the dividend after 76, then repeat: 762 / 90

Step 6:
762 divided by 90 is 8 with a remainder of 42.
Put 8 as the next digit of the answer. 
Result so far: 5678.0
If we take 720 away from 762, 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.

On to step 7:
The number 90 fits into 420 4 times, leaving a remainder of 60.
Record the quotient 4 as the next digit in the result. 
Result so far: 5678.4
If we take 360 away from 420, we end up with 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Advancing to step 8:
The number 90 fits into 600 6 times, leaving a remainder of 60.
Use 6 as the next digit of our solution. 
Result so far: 5678.46
If we subtract 540 from 600, we get 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Advancing to step 9:
90 goes into 600 6 times with a remainder of 60.
The next digit of our result is 6. 
Result so far: 5678.466
The remainder is 60 after subtracting 540 from 600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

After the division, we end up with 5678.466 and a remainder of 0.006.