We're dividing 535988 by 90 
We're looking to find how many times 90 goes into 535988.

On to step 1:
If we divide 5 by 90, we get 0 and a remainder of 5.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 5 leaves us with 5.
Include the next digit (3) from the dividend after 5, then repeat: 53 / 90

Advancing to step 2:
90 goes into 53 0 times with a remainder of 53.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 53 and we're left with 53.
Grab the next digit (5) from the dividend, add it to 53, then carry on: 535 / 90

On to step 3:
When dividing 535 by 90, we get 5 with a remainder of 85.
The next digit of our result is 5. 
Result so far: 5.0
If we subtract 450 from 535, we get 85.
Grab the next digit (9) from the dividend, add it to 85, then carry on: 859 / 90

Step 4:
The number 90 fits into 859 9 times, leaving a remainder of 49.
The number 9 becomes the next digit in our result. 
Result so far: 59.0
Subtracting 810 from 859 leaves us with 49.
Bring next digit (8) of the dividend behind the 49 and repeat the process: 498 / 90

Moving on to step 5:
The number 90 fits into 498 5 times, leaving a remainder of 48.
The next digit of our result is 5. 
Result so far: 595.0
If we subtract 450 from 498, we get 48.
Fetch the next digit (8) from the dividend, attach it to 48 and continue: 488 / 90

Advancing to step 6:
If we divide 488 by 90, we get 5 and a remainder of 38.
The number 5 becomes the next digit in our result. 
Result so far: 5955.0
Deduct 450 from 488 and we're left with 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Advancing to step 7:
When dividing 380 by 90, we get 4 with a remainder of 20.
Use 4 as the next digit of our solution. 
Result so far: 5955.4
If we take 360 away from 380, we end up with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

On to step 8:
200 divided by 90 is 2 with a remainder of 20.
The next digit of our result is 2. 
Result so far: 5955.42
Deduct 180 from 200 and we're left with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Moving on to step 9:
The number 90 fits into 200 2 times, leaving a remainder of 20.
The next digit of our result is 2. 
Result so far: 5955.422
Deduct 180 from 200 and we're left with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

The final outcome is 5955.422, with a leftover of 0.002.