757403 ÷ 90 
The aim is to understand the frequency of 90 in 757403.

Let's proceed to step 1:
The number 90 fits into 7 0 times, leaving a remainder of 7.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 7, we end up with 7.
Fetch the next digit (5) from the dividend, attach it to 7 and continue: 75 / 90

Let's proceed to step 2:
90 goes into 75 0 times with a remainder of 75.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 75 leaves us with 75.
Append the next digit (7) from the dividend to 75 and continue with: 757 / 90

Moving on to step 3:
The number 90 fits into 757 8 times, leaving a remainder of 37.
The number 8 becomes the next digit in our result. 
Result so far: 8.0
The remainder is 37 after subtracting 720 from 757.
Bring next digit (4) of the dividend behind the 37 and repeat the process: 374 / 90

Step 4:
90 can be fit into 374 4 times, resulting in a remainder of 14.
Record the quotient 4 as the next digit in the result. 
Result so far: 84.0
If we take 360 away from 374, we end up with 14.
Fetch the next digit (0) from the dividend, attach it to 14 and continue: 140 / 90

Step 5:
90 can be fit into 140 1 times, resulting in a remainder of 50.
The next digit of our result is 1. 
Result so far: 841.0
If we subtract 90 from 140, we get 50.
Include the next digit (3) from the dividend after 50, then repeat: 503 / 90

Going ahead to step 6:
The number 90 fits into 503 5 times, leaving a remainder of 53.
Record the quotient 5 as the next digit in the result. 
Result so far: 8415.0
Subtract 450 from 503 to get 53.
Since there are no more digits in the dividend, we add a zero to the remainder making it 530, and continue the process.

On to step 7:
90 can be fit into 530 5 times, resulting in a remainder of 80.
Use 5 as the next digit of our solution. 
Result so far: 8415.5
Subtract 450 from 530 to 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.

Moving on to step 8:
When dividing 800 by 90, we get 8 with a remainder of 80.
Use 8 as the next digit of our solution. 
Result so far: 8415.58
If we take 720 away from 800, 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.

Step 9:
If we divide 800 by 90, we get 8 and a remainder of 80.
The next digit of our result is 8. 
Result so far: 8415.588
If we take 720 away from 800, 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.

The quotient of the division is 8415.588, and the remainder is 0.008.