We're dividing 336268 by 90 
The aim is to understand the frequency of 90 in 336268.

On to step 1:
90 can be fit into 3 0 times, resulting in a remainder of 3.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 3 and we're left with 3.
Include the next digit (3) from the dividend after 3, then repeat: 33 / 90

Step 2:
90 goes into 33 0 times with a remainder of 33.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 33 to get 33.
Grab the next digit (6) from the dividend, add it to 33, then carry on: 336 / 90

On to step 3:
90 can be fit into 336 3 times, resulting in a remainder of 66.
Write down 3 as next digit of the result. 
Result so far: 3.0
Subtracting 270 from 336 leaves us with 66.
Include the next digit (2) from the dividend after 66, then repeat: 662 / 90

Let's proceed to step 4:
If we divide 662 by 90, we get 7 and a remainder of 32.
Write down 7 as next digit of the result. 
Result so far: 37.0
The remainder is 32 after subtracting 630 from 662.
Bring next digit (6) of the dividend behind the 32 and repeat the process: 326 / 90

Advancing to step 5:
If we divide 326 by 90, we get 3 and a remainder of 56.
Write down 3 as next digit of the result. 
Result so far: 373.0
If we take 270 away from 326, we end up with 56.
Bring next digit (8) of the dividend behind the 56 and repeat the process: 568 / 90

Advancing to step 6:
90 goes into 568 6 times with a remainder of 28.
The number 6 becomes the next digit in our result. 
Result so far: 3736.0
Deduct 540 from 568 and we're left with 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

On to step 7:
90 goes into 280 3 times with a remainder of 10.
Record the quotient 3 as the next digit in the result. 
Result so far: 3736.3
Subtracting 270 from 280 leaves us 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.

Let's proceed to step 8:
90 goes into 100 1 times with a remainder of 10.
Put 1 as the next digit of the answer. 
Result so far: 3736.31
The remainder is 10 after subtracting 90 from 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Step 9:
The number 90 fits into 100 1 times, leaving a remainder of 10.
Use 1 as the next digit of our solution. 
Result so far: 3736.311
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.

The quotient of the division is 3736.311, and the remainder is 0.001.