We're dividing 396145 by 90 
We want to divide 396145 by 90.

Let's proceed to step 1:
3 divided by 90 is 0 with a remainder of 3.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 3, we end up with 3.
Take the next digit (9) from the dividend and append it to 3, then repeat: 39 / 90

Let's proceed to step 2:
The number 90 fits into 39 0 times, leaving a remainder of 39.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 39 leaves us with 39.
Include the next digit (6) from the dividend after 39, then repeat: 396 / 90

Moving on to step 3:
90 can be fit into 396 4 times, resulting in a remainder of 36.
Put 4 as the next digit of the answer. 
Result so far: 4.0
Subtract 360 from 396 to get 36.
Take the next digit (1) from the dividend and append it to 36, then repeat: 361 / 90

Step 4:
90 goes into 361 4 times with a remainder of 1.
The number 4 becomes the next digit in our result. 
Result so far: 44.0
Subtracting 360 from 361 leaves us with 1.
Include the next digit (4) from the dividend after 1, then repeat: 14 / 90

Let's proceed to step 5:
90 can be fit into 14 0 times, resulting in a remainder of 14.
The next digit of our result is 0. 
Result so far: 440.0
Deduct 0 from 14 and we're left with 14.
Take the next digit (5) from the dividend and append it to 14, then repeat: 145 / 90

Moving on to step 6:
When dividing 145 by 90, we get 1 with a remainder of 55.
Record the quotient 1 as the next digit in the result. 
Result so far: 4401.0
If we take 90 away from 145, we end up with 55.
Since there are no more digits in the dividend, we add a zero to the remainder making it 550, and continue the process.

On to step 7:
90 goes into 550 6 times with a remainder of 10.
Put 6 as the next digit of the answer. 
Result so far: 4401.6
Deduct 540 from 550 and we're left 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.

Moving on to step 8:
If we divide 100 by 90, we get 1 and a remainder of 10.
Use 1 as the next digit of our solution. 
Result so far: 4401.61
If we subtract 90 from 100, we 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.

On to step 9:
The number 90 fits into 100 1 times, leaving a remainder of 10.
Record the quotient 1 as the next digit in the result. 
Result so far: 4401.611
Deduct 90 from 100 and we're left 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.

Our division results in 4401.611 with a remaining 0.001.