Let's divide 162129 by 90
The aim is to understand the frequency of 90 in 162129.

Let's proceed to step 1:
If we divide 1 by 90, we get 0 and a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 1 and we're left with 1.
Include the next digit (6) from the dividend after 1, then repeat: 16 / 90

Step 2:
The number 90 fits into 16 0 times, leaving a remainder of 16.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 16, we get 16.
Grab the next digit (2) from the dividend, add it to 16, then carry on: 162 / 90

Going ahead to step 3:
90 goes into 162 1 times with a remainder of 72.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Subtracting 90 from 162 leaves us with 72.
Fetch the next digit (1) from the dividend, attach it to 72 and continue: 721 / 90

Step 4:
If we divide 721 by 90, we get 8 and a remainder of 1.
The next digit of our result is 8. 
Result so far: 18.0
If we subtract 720 from 721, we get 1.
Include the next digit (2) from the dividend after 1, then repeat: 12 / 90

Advancing to step 5:
The number 90 fits into 12 0 times, leaving a remainder of 12.
Record the quotient 0 as the next digit in the result. 
Result so far: 180.0
Subtract 0 from 12 to get 12.
Take the next digit (9) from the dividend and append it to 12, then repeat: 129 / 90

Going ahead to step 6:
90 can be fit into 129 1 times, resulting in a remainder of 39.
Record the quotient 1 as the next digit in the result. 
Result so far: 1801.0
Deduct 90 from 129 and we're left with 39.
Since there are no more digits in the dividend, we add a zero to the remainder making it 390, and continue the process.

Step 7:
If we divide 390 by 90, we get 4 and a remainder of 30.
Write down 4 as next digit of the result. 
Result so far: 1801.4
The remainder is 30 after subtracting 360 from 390.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Going ahead to step 8:
If we divide 300 by 90, we get 3 and a remainder of 30.
The number 3 becomes the next digit in our result. 
Result so far: 1801.43
Deduct 270 from 300 and we're left with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Moving on to step 9:
300 divided by 90 is 3 with a remainder of 30.
Put 3 as the next digit of the answer. 
Result so far: 1801.433
Subtract 270 from 300 to get 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

The quotient of the division is 1801.433, and the remainder is 0.003.