735319 divided by 90 
The aim is to understand the frequency of 90 in 735319.

Advancing to step 1:
If we divide 7 by 90, we get 0 and a remainder of 7.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 7, we get 7.
Fetch the next digit (3) from the dividend, attach it to 7 and continue: 73 / 90

Step 2:
The number 90 fits into 73 0 times, leaving a remainder of 73.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 73 after subtracting 0 from 73.
Grab the next digit (5) from the dividend, add it to 73, then carry on: 735 / 90

Let's proceed to step 3:
90 can be fit into 735 8 times, resulting in a remainder of 15.
Write down 8 as next digit of the result. 
Result so far: 8.0
Subtracting 720 from 735 leaves us with 15.
Include the next digit (3) from the dividend after 15, then repeat: 153 / 90

Advancing to step 4:
153 divided by 90 is 1 with a remainder of 63.
Use 1 as the next digit of our solution. 
Result so far: 81.0
If we subtract 90 from 153, we get 63.
Fetch the next digit (1) from the dividend, attach it to 63 and continue: 631 / 90

Going ahead to step 5:
90 goes into 631 7 times with a remainder of 1.
Record the quotient 7 as the next digit in the result. 
Result so far: 817.0
If we subtract 630 from 631, we get 1.
Take the next digit (9) from the dividend and append it to 1, then repeat: 19 / 90

Step 6:
19 divided by 90 is 0 with a remainder of 19.
Use 0 as the next digit of our solution. 
Result so far: 8170.0
Subtracting 0 from 19 leaves us with 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Advancing to step 7:
If we divide 190 by 90, we get 2 and a remainder of 10.
Record the quotient 2 as the next digit in the result. 
Result so far: 8170.2
The remainder is 10 after subtracting 180 from 190.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Going ahead to step 8:
100 divided by 90 is 1 with a remainder of 10.
The next digit of our result is 1. 
Result so far: 8170.21
Subtract 90 from 100 to get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Advancing to step 9:
100 divided by 90 is 1 with a remainder of 10.
Write down 1 as next digit of the result. 
Result so far: 8170.211
Deduct 90 from 100 and we're left with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

The quotient of the division is 8170.211, and the remainder is 0.001.