486583 divided by 40 
Our goal is to divide 486583 by 40.

On to step 1:
40 can be fit into 4 0 times, resulting in a remainder of 4.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 4, we end up with 4.
Include the next digit (8) from the dividend after 4, then repeat: 48 / 40

Step 2:
When dividing 48 by 40, we get 1 with a remainder of 8.
Write down 1 as next digit of the result. 
Result so far: 1.0
Deduct 40 from 48 and we're left with 8.
Fetch the next digit (6) from the dividend, attach it to 8 and continue: 86 / 40

Going ahead to step 3:
40 goes into 86 2 times with a remainder of 6.
Record the quotient 2 as the next digit in the result. 
Result so far: 12.0
Subtracting 80 from 86 leaves us with 6.
Append the next digit (5) from the dividend to 6 and continue with: 65 / 40

On to step 4:
If we divide 65 by 40, we get 1 and a remainder of 25.
Write down 1 as next digit of the result. 
Result so far: 121.0
Subtract 40 from 65 to get 25.
Include the next digit (8) from the dividend after 25, then repeat: 258 / 40

On to step 5:
40 goes into 258 6 times with a remainder of 18.
The next digit of our result is 6. 
Result so far: 1216.0
The remainder is 18 after subtracting 240 from 258.
Grab the next digit (3) from the dividend, add it to 18, then carry on: 183 / 40

Let's proceed to step 6:
40 goes into 183 4 times with a remainder of 23.
Use 4 as the next digit of our solution. 
Result so far: 12164.0
The remainder is 23 after subtracting 160 from 183.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

On to step 7:
When dividing 230 by 40, we get 5 with a remainder of 30.
Write down 5 as next digit of the result. 
Result so far: 12164.5
If we take 200 away from 230, we end up with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Let's proceed to step 8:
300 divided by 40 is 7 with a remainder of 20.
Record the quotient 7 as the next digit in the result. 
Result so far: 12164.57
If we subtract 280 from 300, 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.

On to step 9:
40 goes into 200 5 times with a remainder of 0.
The next digit of our result is 5. 
Result so far: 12164.575
If we take 200 away from 200, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Advancing to step 10:
If we divide 0 by 40, we get 0 and a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 12164.575
The remainder is 0 after subtracting 0 from 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Going ahead to step 11:
40 can be fit into 0 0 times, resulting in a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 12164.575
Deduct 0 from 0 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Our division results in 12164.575 with a remaining 0.0.