12793731 ÷ 405 
We want to divide 12793731 by 405.

Moving on to step 1:
If we divide 1 by 405, we get 0 and a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 1 to get 1.
Append the next digit (2) from the dividend to 1 and continue with: 12 / 405

On to step 2:
12 divided by 405 is 0 with a remainder of 12.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 12, we end up with 12.
Bring next digit (7) of the dividend behind the 12 and repeat the process: 127 / 405

Let's proceed to step 3:
405 goes into 127 0 times with a remainder of 127.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 127 after subtracting 0 from 127.
Include the next digit (9) from the dividend after 127, then repeat: 1279 / 405

On to step 4:
The number 405 fits into 1279 3 times, leaving a remainder of 64.
The number 3 becomes the next digit in our result. 
Result so far: 3.0
Deduct 1215 from 1279 and we're left with 64.
Fetch the next digit (3) from the dividend, attach it to 64 and continue: 643 / 405

Going ahead to step 5:
405 can be fit into 643 1 times, resulting in a remainder of 238.
Record the quotient 1 as the next digit in the result. 
Result so far: 31.0
If we take 405 away from 643, we end up with 238.
Bring next digit (7) of the dividend behind the 238 and repeat the process: 2387 / 405

On to step 6:
2387 divided by 405 is 5 with a remainder of 362.
Write down 5 as next digit of the result. 
Result so far: 315.0
If we take 2025 away from 2387, we end up with 362.
Append the next digit (3) from the dividend to 362 and continue with: 3623 / 405

On to step 7:
405 goes into 3623 8 times with a remainder of 383.
The number 8 becomes the next digit in our result. 
Result so far: 3158.0
If we take 3240 away from 3623, we end up with 383.
Take the next digit (1) from the dividend and append it to 383, then repeat: 3831 / 405

Step 8:
When dividing 3831 by 405, we get 9 with a remainder of 186.
Use 9 as the next digit of our solution. 
Result so far: 31589.0
If we take 3645 away from 3831, we end up with 186.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1860, and continue the process.

Moving on to step 9:
When dividing 1860 by 405, we get 4 with a remainder of 240.
Put 4 as the next digit of the answer. 
Result so far: 31589.4
If we take 1620 away from 1860, we end up with 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2400, and continue the process.

Going ahead to step 10:
405 can be fit into 2400 5 times, resulting in a remainder of 375.
The number 5 becomes the next digit in our result. 
Result so far: 31589.45
If we take 2025 away from 2400, we end up with 375.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3750, and continue the process.

Going ahead to step 11:
3750 divided by 405 is 9 with a remainder of 105.
Put 9 as the next digit of the answer. 
Result so far: 31589.459
The remainder is 105 after subtracting 3645 from 3750.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1050, and continue the process.

Let's proceed to step 12:
If we divide 1050 by 405, we get 2 and a remainder of 240.
The number 2 becomes the next digit in our result. 
Result so far: 31589.4592
Subtract 810 from 1050 to get 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2400, and continue the process.

Going ahead to step 13:
405 goes into 2400 5 times with a remainder of 375.
Write down 5 as next digit of the result. 
Result so far: 31589.45925
Deduct 2025 from 2400 and we're left with 375.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3750, and continue the process.

On to step 14:
405 can be fit into 3750 9 times, resulting in a remainder of 105.
Use 9 as the next digit of our solution. 
Result so far: 31589.459259
If we subtract 3645 from 3750, we get 105.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1050, and continue the process.

Advancing to step 15:
1050 divided by 405 is 2 with a remainder of 240.
Use 2 as the next digit of our solution. 
Result so far: 31589.4592592
If we take 810 away from 1050, we end up with 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2400, and continue the process.

On to step 16:
405 goes into 2400 5 times with a remainder of 375.
Put 5 as the next digit of the answer. 
Result so far: 31589.45925925
Subtract 2025 from 2400 to get 375.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3750, and continue the process.

After the division, we end up with 31589.45925925 and a remainder of 3.75e-07.