Let's divide 84209285 by 90
We want to figure out the number of times 84209285 can be divided by 90.

Step 1:
The number 90 fits into 8 0 times, leaving a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Take the next digit (4) from the dividend and append it to 8, then repeat: 84 / 90

Moving on to step 2:
If we divide 84 by 90, we get 0 and a remainder of 84.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 84 leaves us with 84.
Fetch the next digit (2) from the dividend, attach it to 84 and continue: 842 / 90

Step 3:
When dividing 842 by 90, we get 9 with a remainder of 32.
Use 9 as the next digit of our solution. 
Result so far: 9.0
The remainder is 32 after subtracting 810 from 842.
Append the next digit (0) from the dividend to 32 and continue with: 320 / 90

Step 4:
90 goes into 320 3 times with a remainder of 50.
Write down 3 as next digit of the result. 
Result so far: 93.0
If we subtract 270 from 320, we get 50.
Grab the next digit (9) from the dividend, add it to 50, then carry on: 509 / 90

Going ahead to step 5:
90 can be fit into 509 5 times, resulting in a remainder of 59.
The number 5 becomes the next digit in our result. 
Result so far: 935.0
Deduct 450 from 509 and we're left with 59.
Include the next digit (2) from the dividend after 59, then repeat: 592 / 90

Advancing to step 6:
The number 90 fits into 592 6 times, leaving a remainder of 52.
The next digit of our result is 6. 
Result so far: 9356.0
The remainder is 52 after subtracting 540 from 592.
Include the next digit (8) from the dividend after 52, then repeat: 528 / 90

Moving on to step 7:
When dividing 528 by 90, we get 5 with a remainder of 78.
The next digit of our result is 5. 
Result so far: 93565.0
Deduct 450 from 528 and we're left with 78.
Take the next digit (5) from the dividend and append it to 78, then repeat: 785 / 90

Advancing to step 8:
90 goes into 785 8 times with a remainder of 65.
Use 8 as the next digit of our solution. 
Result so far: 935658.0
If we subtract 720 from 785, we get 65.
Since there are no more digits in the dividend, we add a zero to the remainder making it 650, and continue the process.

Going ahead to step 9:
90 goes into 650 7 times with a remainder of 20.
The number 7 becomes the next digit in our result. 
Result so far: 935658.7
If we subtract 630 from 650, we get 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 10:
If we divide 200 by 90, we get 2 and a remainder of 20.
Put 2 as the next digit of the answer. 
Result so far: 935658.72
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.

Going ahead to step 11:
200 divided by 90 is 2 with a remainder of 20.
Use 2 as the next digit of our solution. 
Result so far: 935658.722
The remainder is 20 after subtracting 180 from 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Our division results in 935658.722 with a remaining 0.002.