400092 ÷ 90 
Our goal is to divide 400092 by 90.

Going ahead to step 1:
90 can be fit into 4 0 times, resulting in a remainder of 4.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 4, we get 4.
Grab the next digit (0) from the dividend, add it to 4, then carry on: 40 / 90

Step 2:
90 can be fit into 40 0 times, resulting in a remainder of 40.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 40 leaves us with 40.
Bring next digit (0) of the dividend behind the 40 and repeat the process: 400 / 90

Moving on to step 3:
If we divide 400 by 90, we get 4 and a remainder of 40.
Use 4 as the next digit of our solution. 
Result so far: 4.0
If we take 360 away from 400, we end up with 40.
Take the next digit (0) from the dividend and append it to 40, then repeat: 400 / 90

Moving on to step 4:
The number 90 fits into 400 4 times, leaving a remainder of 40.
Use 4 as the next digit of our solution. 
Result so far: 44.0
Subtracting 360 from 400 leaves us with 40.
Grab the next digit (9) from the dividend, add it to 40, then carry on: 409 / 90

On to step 5:
When dividing 409 by 90, we get 4 with a remainder of 49.
The number 4 becomes the next digit in our result. 
Result so far: 444.0
Subtract 360 from 409 to get 49.
Include the next digit (2) from the dividend after 49, then repeat: 492 / 90

Advancing to step 6:
If we divide 492 by 90, we get 5 and a remainder of 42.
Record the quotient 5 as the next digit in the result. 
Result so far: 4445.0
If we take 450 away from 492, we end up with 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Advancing to step 7:
90 goes into 420 4 times with a remainder of 60.
The next digit of our result is 4. 
Result so far: 4445.4
If we subtract 360 from 420, we get 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

On to step 8:
90 goes into 600 6 times with a remainder of 60.
Record the quotient 6 as the next digit in the result. 
Result so far: 4445.46
The remainder is 60 after subtracting 540 from 600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

On to step 9:
The number 90 fits into 600 6 times, leaving a remainder of 60.
Use 6 as the next digit of our solution. 
Result so far: 4445.466
Deduct 540 from 600 and we're left with 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Our division results in 4445.466 with a remaining 0.006.