658043 ÷ 90 
The aim is to understand the frequency of 90 in 658043.

Moving on to step 1:
90 can be fit into 6 0 times, resulting in a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 6 after subtracting 0 from 6.
Take the next digit (5) from the dividend and append it to 6, then repeat: 65 / 90

Let's proceed to step 2:
65 divided by 90 is 0 with a remainder of 65.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 65, we get 65.
Grab the next digit (8) from the dividend, add it to 65, then carry on: 658 / 90

On to step 3:
If we divide 658 by 90, we get 7 and a remainder of 28.
The number 7 becomes the next digit in our result. 
Result so far: 7.0
Deduct 630 from 658 and we're left with 28.
Bring next digit (0) of the dividend behind the 28 and repeat the process: 280 / 90

On to step 4:
280 divided by 90 is 3 with a remainder of 10.
Put 3 as the next digit of the answer. 
Result so far: 73.0
Subtracting 270 from 280 leaves us with 10.
Take the next digit (4) from the dividend and append it to 10, then repeat: 104 / 90

Moving on to step 5:
104 divided by 90 is 1 with a remainder of 14.
Use 1 as the next digit of our solution. 
Result so far: 731.0
Subtract 90 from 104 to get 14.
Fetch the next digit (3) from the dividend, attach it to 14 and continue: 143 / 90

Advancing to step 6:
143 divided by 90 is 1 with a remainder of 53.
Put 1 as the next digit of the answer. 
Result so far: 7311.0
Deduct 90 from 143 and we're left with 53.
Since there are no more digits in the dividend, we add a zero to the remainder making it 530, and continue the process.

Step 7:
530 divided by 90 is 5 with a remainder of 80.
The number 5 becomes the next digit in our result. 
Result so far: 7311.5
If we take 450 away from 530, we end up with 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Going ahead to step 8:
800 divided by 90 is 8 with a remainder of 80.
Record the quotient 8 as the next digit in the result. 
Result so far: 7311.58
Deduct 720 from 800 and we're left with 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Let's proceed to step 9:
800 divided by 90 is 8 with a remainder of 80.
Put 8 as the next digit of the answer. 
Result so far: 7311.588
If we subtract 720 from 800, we get 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

The quotient of the division is 7311.588, and the remainder is 0.008.