We're dividing 12863836 by 405 
Our goal is to divide 12863836 by 405.

Step 1:
405 goes into 1 0 times with a remainder of 1.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 1 after subtracting 0 from 1.
Fetch the next digit (2) from the dividend, attach it to 1 and continue: 12 / 405

On to step 2:
12 divided by 405 is 0 with a remainder of 12.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 12 after subtracting 0 from 12.
Include the next digit (8) from the dividend after 12, then repeat: 128 / 405

Step 3:
128 divided by 405 is 0 with a remainder of 128.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 128 and we're left with 128.
Append the next digit (6) from the dividend to 128 and continue with: 1286 / 405

Step 4:
405 goes into 1286 3 times with a remainder of 71.
The next digit of our result is 3. 
Result so far: 3.0
If we take 1215 away from 1286, we end up with 71.
Append the next digit (3) from the dividend to 71 and continue with: 713 / 405

Let's proceed to step 5:
If we divide 713 by 405, we get 1 and a remainder of 308.
Use 1 as the next digit of our solution. 
Result so far: 31.0
If we take 405 away from 713, we end up with 308.
Include the next digit (8) from the dividend after 308, then repeat: 3088 / 405

On to step 6:
The number 405 fits into 3088 7 times, leaving a remainder of 253.
Record the quotient 7 as the next digit in the result. 
Result so far: 317.0
If we take 2835 away from 3088, we end up with 253.
Fetch the next digit (3) from the dividend, attach it to 253 and continue: 2533 / 405

Step 7:
2533 divided by 405 is 6 with a remainder of 103.
Record the quotient 6 as the next digit in the result. 
Result so far: 3176.0
The remainder is 103 after subtracting 2430 from 2533.
Bring next digit (6) of the dividend behind the 103 and repeat the process: 1036 / 405

On to step 8:
405 can be fit into 1036 2 times, resulting in a remainder of 226.
The number 2 becomes the next digit in our result. 
Result so far: 31762.0
Subtract 810 from 1036 to get 226.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2260, and continue the process.

Let's proceed to step 9:
When dividing 2260 by 405, we get 5 with a remainder of 235.
Use 5 as the next digit of our solution. 
Result so far: 31762.5
The remainder is 235 after subtracting 2025 from 2260.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2350, and continue the process.

Advancing to step 10:
When dividing 2350 by 405, we get 5 with a remainder of 325.
The next digit of our result is 5. 
Result so far: 31762.55
If we subtract 2025 from 2350, we get 325.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3250, and continue the process.

After the division, we end up with 31762.55 and a remainder of 0.325.