631839 divided by 45 
Let's see how many times 45 fits into 631839.

Step 1:
45 can be fit into 6 0 times, resulting in a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 6 to get 6.
Take the next digit (3) from the dividend and append it to 6, then repeat: 63 / 45

Going ahead to step 2:
63 divided by 45 is 1 with a remainder of 18.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Deduct 45 from 63 and we're left with 18.
Bring next digit (1) of the dividend behind the 18 and repeat the process: 181 / 45

Going ahead to step 3:
45 can be fit into 181 4 times, resulting in a remainder of 1.
Use 4 as the next digit of our solution. 
Result so far: 14.0
The remainder is 1 after subtracting 180 from 181.
Grab the next digit (8) from the dividend, add it to 1, then carry on: 18 / 45

Advancing to step 4:
If we divide 18 by 45, we get 0 and a remainder of 18.
The next digit of our result is 0. 
Result so far: 140.0
If we take 0 away from 18, we end up with 18.
Take the next digit (3) from the dividend and append it to 18, then repeat: 183 / 45

Step 5:
45 goes into 183 4 times with a remainder of 3.
Write down 4 as next digit of the result. 
Result so far: 1404.0
If we take 180 away from 183, we end up with 3.
Append the next digit (9) from the dividend to 3 and continue with: 39 / 45

Let's proceed to step 6:
When dividing 39 by 45, we get 0 with a remainder of 39.
Use 0 as the next digit of our solution. 
Result so far: 14040.0
Subtracting 0 from 39 leaves us with 39.
Since there are no more digits in the dividend, we add a zero to the remainder making it 390, and continue the process.

Advancing to step 7:
45 goes into 390 8 times with a remainder of 30.
The next digit of our result is 8. 
Result so far: 14040.8
The remainder is 30 after subtracting 360 from 390.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Going ahead to step 8:
The number 45 fits into 300 6 times, leaving a remainder of 30.
The number 6 becomes the next digit in our result. 
Result so far: 14040.86
The remainder is 30 after subtracting 270 from 300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

On to step 9:
When dividing 300 by 45, we get 6 with a remainder of 30.
The number 6 becomes the next digit in our result. 
Result so far: 14040.866
The remainder is 30 after subtracting 270 from 300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Our division results in 14040.866 with a remaining 0.003.