Let's divide 12888863 by 807
We want to divide 12888863 by 807.

Step 1:
807 can be fit into 1 0 times, resulting in a remainder of 1.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 1 and we're left with 1.
Include the next digit (2) from the dividend after 1, then repeat: 12 / 807

Let's proceed to step 2:
12 divided by 807 is 0 with a remainder of 12.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 12, we end up with 12.
Fetch the next digit (8) from the dividend, attach it to 12 and continue: 128 / 807

Going ahead to step 3:
When dividing 128 by 807, we get 0 with a remainder of 128.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 128 leaves us with 128.
Bring next digit (8) of the dividend behind the 128 and repeat the process: 1288 / 807

Let's proceed to step 4:
The number 807 fits into 1288 1 times, leaving a remainder of 481.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
The remainder is 481 after subtracting 807 from 1288.
Append the next digit (8) from the dividend to 481 and continue with: 4818 / 807

Let's proceed to step 5:
The number 807 fits into 4818 5 times, leaving a remainder of 783.
Write down 5 as next digit of the result. 
Result so far: 15.0
If we take 4035 away from 4818, we end up with 783.
Bring next digit (8) of the dividend behind the 783 and repeat the process: 7838 / 807

Let's proceed to step 6:
When dividing 7838 by 807, we get 9 with a remainder of 575.
Put 9 as the next digit of the answer. 
Result so far: 159.0
The remainder is 575 after subtracting 7263 from 7838.
Append the next digit (6) from the dividend to 575 and continue with: 5756 / 807

Step 7:
807 goes into 5756 7 times with a remainder of 107.
Put 7 as the next digit of the answer. 
Result so far: 1597.0
Subtracting 5649 from 5756 leaves us with 107.
Include the next digit (3) from the dividend after 107, then repeat: 1073 / 807

Advancing to step 8:
807 can be fit into 1073 1 times, resulting in a remainder of 266.
Put 1 as the next digit of the answer. 
Result so far: 15971.0
If we take 807 away from 1073, we end up with 266.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2660, and continue the process.

Let's proceed to step 9:
807 can be fit into 2660 3 times, resulting in a remainder of 239.
The number 3 becomes the next digit in our result. 
Result so far: 15971.3
If we take 2421 away from 2660, we end up with 239.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2390, and continue the process.

Moving on to step 10:
2390 divided by 807 is 2 with a remainder of 776.
Record the quotient 2 as the next digit in the result. 
Result so far: 15971.32
If we subtract 1614 from 2390, we get 776.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7760, and continue the process.

Step 11:
7760 divided by 807 is 9 with a remainder of 497.
The number 9 becomes the next digit in our result. 
Result so far: 15971.329
If we take 7263 away from 7760, we end up with 497.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4970, and continue the process.

On to step 12:
When dividing 4970 by 807, we get 6 with a remainder of 128.
Use 6 as the next digit of our solution. 
Result so far: 15971.3296
The remainder is 128 after subtracting 4842 from 4970.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1280, and continue the process.

On to step 13:
The number 807 fits into 1280 1 times, leaving a remainder of 473.
Record the quotient 1 as the next digit in the result. 
Result so far: 15971.32961
If we subtract 807 from 1280, we get 473.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4730, and continue the process.

Moving on to step 14:
807 goes into 4730 5 times with a remainder of 695.
The number 5 becomes the next digit in our result. 
Result so far: 15971.329615
Subtract 4035 from 4730 to get 695.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6950, and continue the process.

Advancing to step 15:
When dividing 6950 by 807, we get 8 with a remainder of 494.
Write down 8 as next digit of the result. 
Result so far: 15971.3296158
If we take 6456 away from 6950, we end up with 494.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4940, and continue the process.

Going ahead to step 16:
807 can be fit into 4940 6 times, resulting in a remainder of 98.
Write down 6 as next digit of the result. 
Result so far: 15971.32961586
Deduct 4842 from 4940 and we're left with 98.
Since there are no more digits in the dividend, we add a zero to the remainder making it 980, and continue the process.

The final outcome is 15971.32961586, with a leftover of 9.8e-08.