We divide 553068 by 90
The aim is to understand the frequency of 90 in 553068.

Going ahead to step 1:
The number 90 fits into 5 0 times, leaving a remainder of 5.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 5 after subtracting 0 from 5.
Include the next digit (5) from the dividend after 5, then repeat: 55 / 90

Step 2:
90 goes into 55 0 times with a remainder of 55.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 55 leaves us with 55.
Fetch the next digit (3) from the dividend, attach it to 55 and continue: 553 / 90

Moving on to step 3:
90 goes into 553 6 times with a remainder of 13.
Record the quotient 6 as the next digit in the result. 
Result so far: 6.0
The remainder is 13 after subtracting 540 from 553.
Grab the next digit (0) from the dividend, add it to 13, then carry on: 130 / 90

Moving on to step 4:
The number 90 fits into 130 1 times, leaving a remainder of 40.
Put 1 as the next digit of the answer. 
Result so far: 61.0
If we subtract 90 from 130, we get 40.
Bring next digit (6) of the dividend behind the 40 and repeat the process: 406 / 90

Advancing to step 5:
The number 90 fits into 406 4 times, leaving a remainder of 46.
Use 4 as the next digit of our solution. 
Result so far: 614.0
The remainder is 46 after subtracting 360 from 406.
Grab the next digit (8) from the dividend, add it to 46, then carry on: 468 / 90

Step 6:
If we divide 468 by 90, we get 5 and a remainder of 18.
The number 5 becomes the next digit in our result. 
Result so far: 6145.0
Subtract 450 from 468 to get 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

On to step 7:
The number 90 fits into 180 2 times, leaving a remainder of 0.
The number 2 becomes the next digit in our result. 
Result so far: 6145.2
Subtracting 180 from 180 leaves us with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Advancing to step 8:
90 goes into 0 0 times with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 6145.2
Subtract 0 from 0 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Advancing to step 9:
90 goes into 0 0 times with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 6145.2
If we subtract 0 from 0, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The quotient of the division is 6145.2, and the remainder is 0.0.