Let's divide 3831621 by 900
We want to divide 3831621 by 900.

Step 1:
900 can be fit into 3 0 times, resulting in a remainder of 3.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 3, we end up with 3.
Append the next digit (8) from the dividend to 3 and continue with: 38 / 900

Going ahead to step 2:
If we divide 38 by 900, we get 0 and a remainder of 38.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 38 to get 38.
Include the next digit (3) from the dividend after 38, then repeat: 383 / 900

Advancing to step 3:
383 divided by 900 is 0 with a remainder of 383.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 383, we end up with 383.
Bring next digit (1) of the dividend behind the 383 and repeat the process: 3831 / 900

Advancing to step 4:
If we divide 3831 by 900, we get 4 and a remainder of 231.
Record the quotient 4 as the next digit in the result. 
Result so far: 4.0
Subtracting 3600 from 3831 leaves us with 231.
Grab the next digit (6) from the dividend, add it to 231, then carry on: 2316 / 900

Moving on to step 5:
The number 900 fits into 2316 2 times, leaving a remainder of 516.
Record the quotient 2 as the next digit in the result. 
Result so far: 42.0
If we subtract 1800 from 2316, we get 516.
Include the next digit (2) from the dividend after 516, then repeat: 5162 / 900

Moving on to step 6:
900 can be fit into 5162 5 times, resulting in a remainder of 662.
Write down 5 as next digit of the result. 
Result so far: 425.0
Subtracting 4500 from 5162 leaves us with 662.
Include the next digit (1) from the dividend after 662, then repeat: 6621 / 900

Advancing to step 7:
If we divide 6621 by 900, we get 7 and a remainder of 321.
The next digit of our result is 7. 
Result so far: 4257.0
Deduct 6300 from 6621 and we're left with 321.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3210, and continue the process.

Let's proceed to step 8:
3210 divided by 900 is 3 with a remainder of 510.
The next digit of our result is 3. 
Result so far: 4257.3
If we take 2700 away from 3210, we end up with 510.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5100, and continue the process.

On to step 9:
5100 divided by 900 is 5 with a remainder of 600.
Write down 5 as next digit of the result. 
Result so far: 4257.35
Subtracting 4500 from 5100 leaves us with 600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6000, and continue the process.

Step 10:
The number 900 fits into 6000 6 times, leaving a remainder of 600.
Use 6 as the next digit of our solution. 
Result so far: 4257.356
If we take 5400 away from 6000, we end up with 600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6000, and continue the process.

Step 11:
If we divide 6000 by 900, we get 6 and a remainder of 600.
Write down 6 as next digit of the result. 
Result so far: 4257.3566
If we take 5400 away from 6000, we end up with 600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6000, and continue the process.

In conclusion, the division gives 4257.3566 with a balance of 0.006.