12861039 divided by 659 
Let's see how many times 659 fits into 12861039.

Moving on to step 1:
659 can be fit into 1 0 times, resulting in a remainder of 1.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 1 to get 1.
Bring next digit (2) of the dividend behind the 1 and repeat the process: 12 / 659

On to step 2:
659 can be fit into 12 0 times, resulting in a remainder of 12.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 12 to get 12.
Append the next digit (8) from the dividend to 12 and continue with: 128 / 659

Step 3:
If we divide 128 by 659, we get 0 and a remainder of 128.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 128, we get 128.
Include the next digit (6) from the dividend after 128, then repeat: 1286 / 659

Going ahead to step 4:
When dividing 1286 by 659, we get 1 with a remainder of 627.
Use 1 as the next digit of our solution. 
Result so far: 1.0
The remainder is 627 after subtracting 659 from 1286.
Take the next digit (1) from the dividend and append it to 627, then repeat: 6271 / 659

Advancing to step 5:
659 goes into 6271 9 times with a remainder of 340.
The next digit of our result is 9. 
Result so far: 19.0
Deduct 5931 from 6271 and we're left with 340.
Take the next digit (0) from the dividend and append it to 340, then repeat: 3400 / 659

Going ahead to step 6:
3400 divided by 659 is 5 with a remainder of 105.
The next digit of our result is 5. 
Result so far: 195.0
If we take 3295 away from 3400, we end up with 105.
Grab the next digit (3) from the dividend, add it to 105, then carry on: 1053 / 659

Let's proceed to step 7:
When dividing 1053 by 659, we get 1 with a remainder of 394.
The number 1 becomes the next digit in our result. 
Result so far: 1951.0
If we subtract 659 from 1053, we get 394.
Take the next digit (9) from the dividend and append it to 394, then repeat: 3949 / 659

Going ahead to step 8:
If we divide 3949 by 659, we get 5 and a remainder of 654.
The number 5 becomes the next digit in our result. 
Result so far: 19515.0
The remainder is 654 after subtracting 3295 from 3949.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6540, and continue the process.

Moving on to step 9:
659 goes into 6540 9 times with a remainder of 609.
Record the quotient 9 as the next digit in the result. 
Result so far: 19515.9
If we take 5931 away from 6540, we end up with 609.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6090, and continue the process.

Let's proceed to step 10:
The number 659 fits into 6090 9 times, leaving a remainder of 159.
The next digit of our result is 9. 
Result so far: 19515.99
Subtract 5931 from 6090 to get 159.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1590, and continue the process.

In conclusion, the division gives 19515.99 with a balance of 0.159.