162413 divided by 90 
The aim is to understand the frequency of 90 in 162413.

Going ahead to step 1:
The number 90 fits into 1 0 times, leaving a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 1 leaves us with 1.
Append the next digit (6) from the dividend to 1 and continue with: 16 / 90

Moving on to step 2:
90 can be fit into 16 0 times, resulting in a remainder of 16.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 16, we end up with 16.
Grab the next digit (2) from the dividend, add it to 16, then carry on: 162 / 90

Advancing to step 3:
90 can be fit into 162 1 times, resulting in a remainder of 72.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
If we take 90 away from 162, we end up with 72.
Include the next digit (4) from the dividend after 72, then repeat: 724 / 90

Step 4:
If we divide 724 by 90, we get 8 and a remainder of 4.
Use 8 as the next digit of our solution. 
Result so far: 18.0
Subtract 720 from 724 to get 4.
Grab the next digit (1) from the dividend, add it to 4, then carry on: 41 / 90

Let's proceed to step 5:
41 divided by 90 is 0 with a remainder of 41.
The number 0 becomes the next digit in our result. 
Result so far: 180.0
The remainder is 41 after subtracting 0 from 41.
Grab the next digit (3) from the dividend, add it to 41, then carry on: 413 / 90

Going ahead to step 6:
90 can be fit into 413 4 times, resulting in a remainder of 53.
Record the quotient 4 as the next digit in the result. 
Result so far: 1804.0
The remainder is 53 after subtracting 360 from 413.
Since there are no more digits in the dividend, we add a zero to the remainder making it 530, and continue the process.

Moving on to step 7:
The number 90 fits into 530 5 times, leaving a remainder of 80.
The next digit of our result is 5. 
Result so far: 1804.5
If we subtract 450 from 530, 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.

Moving on to step 8:
800 divided by 90 is 8 with a remainder of 80.
The next digit of our result is 8. 
Result so far: 1804.58
The remainder is 80 after subtracting 720 from 800.
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 9:
90 can be fit into 800 8 times, resulting in a remainder of 80.
Use 8 as the next digit of our solution. 
Result so far: 1804.588
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.

After the division, we end up with 1804.588 and a remainder of 0.008.