400470 ÷ 90 
Let's see how many times 90 fits into 400470.

Let's proceed to step 1:
The number 90 fits into 4 0 times, leaving a remainder of 4.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 4 and we're left with 4.
Grab the next digit (0) from the dividend, add it to 4, then carry on: 40 / 90

Advancing to step 2:
The number 90 fits into 40 0 times, leaving a remainder of 40.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 40 and we're left with 40.
Grab the next digit (0) from the dividend, add it to 40, then carry on: 400 / 90

Step 3:
When dividing 400 by 90, we get 4 with 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.
Grab the next digit (4) from the dividend, add it to 40, then carry on: 404 / 90

Moving on to step 4:
90 goes into 404 4 times with a remainder of 44.
The next digit of our result is 4. 
Result so far: 44.0
The remainder is 44 after subtracting 360 from 404.
Append the next digit (7) from the dividend to 44 and continue with: 447 / 90

On to step 5:
When dividing 447 by 90, we get 4 with a remainder of 87.
Put 4 as the next digit of the answer. 
Result so far: 444.0
Deduct 360 from 447 and we're left with 87.
Append the next digit (0) from the dividend to 87 and continue with: 870 / 90

Advancing to step 6:
90 goes into 870 9 times with a remainder of 60.
The number 9 becomes the next digit in our result. 
Result so far: 4449.0
The remainder is 60 after subtracting 810 from 870.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Going ahead to step 7:
90 can be fit into 600 6 times, resulting in a remainder of 60.
Write down 6 as next digit of the result. 
Result so far: 4449.6
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.

Going ahead to step 8:
600 divided by 90 is 6 with a remainder of 60.
Write down 6 as next digit of the result. 
Result so far: 4449.66
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 4449.66 with a remaining 0.06.