12811560 ÷ 678 
We're looking to find how many times 678 goes into 12811560.

Advancing to step 1:
The number 678 fits into 1 0 times, leaving a remainder of 1.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 1 leaves us with 1.
Take the next digit (2) from the dividend and append it to 1, then repeat: 12 / 678

On to step 2:
678 can be fit into 12 0 times, resulting in a remainder of 12.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 12 to get 12.
Include the next digit (8) from the dividend after 12, then repeat: 128 / 678

Advancing to step 3:
678 goes into 128 0 times with a remainder of 128.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 128, we get 128.
Take the next digit (1) from the dividend and append it to 128, then repeat: 1281 / 678

Advancing to step 4:
678 can be fit into 1281 1 times, resulting in a remainder of 603.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Subtract 678 from 1281 to get 603.
Bring next digit (1) of the dividend behind the 603 and repeat the process: 6031 / 678

Let's proceed to step 5:
678 goes into 6031 8 times with a remainder of 607.
Put 8 as the next digit of the answer. 
Result so far: 18.0
If we take 5424 away from 6031, we end up with 607.
Append the next digit (5) from the dividend to 607 and continue with: 6075 / 678

On to step 6:
678 can be fit into 6075 8 times, resulting in a remainder of 651.
Use 8 as the next digit of our solution. 
Result so far: 188.0
The remainder is 651 after subtracting 5424 from 6075.
Include the next digit (6) from the dividend after 651, then repeat: 6516 / 678

Advancing to step 7:
If we divide 6516 by 678, we get 9 and a remainder of 414.
Write down 9 as next digit of the result. 
Result so far: 1889.0
The remainder is 414 after subtracting 6102 from 6516.
Append the next digit (0) from the dividend to 414 and continue with: 4140 / 678

Moving on to step 8:
4140 divided by 678 is 6 with a remainder of 72.
The number 6 becomes the next digit in our result. 
Result so far: 18896.0
If we subtract 4068 from 4140, we get 72.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

Let's proceed to step 9:
The number 678 fits into 720 1 times, leaving a remainder of 42.
Use 1 as the next digit of our solution. 
Result so far: 18896.1
If we take 678 away from 720, we end up with 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Advancing to step 10:
678 goes into 420 0 times with a remainder of 420.
The next digit of our result is 0. 
Result so far: 18896.1
If we take 0 away from 420, we end up with 420.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4200, and continue the process.

On to step 11:
If we divide 4200 by 678, we get 6 and a remainder of 132.
The next digit of our result is 6. 
Result so far: 18896.106
Subtracting 4068 from 4200 leaves us with 132.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1320, and continue the process.

Moving on to step 12:
The number 678 fits into 1320 1 times, leaving a remainder of 642.
Use 1 as the next digit of our solution. 
Result so far: 18896.1061
If we take 678 away from 1320, we end up with 642.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6420, and continue the process.

Moving on to step 13:
The number 678 fits into 6420 9 times, leaving a remainder of 318.
The number 9 becomes the next digit in our result. 
Result so far: 18896.10619
If we subtract 6102 from 6420, we get 318.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3180, and continue the process.

Going ahead to step 14:
678 can be fit into 3180 4 times, resulting in a remainder of 468.
Use 4 as the next digit of our solution. 
Result so far: 18896.106194
Subtract 2712 from 3180 to get 468.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4680, and continue the process.

Going ahead to step 15:
678 can be fit into 4680 6 times, resulting in a remainder of 612.
Write down 6 as next digit of the result. 
Result so far: 18896.1061946
The remainder is 612 after subtracting 4068 from 4680.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6120, and continue the process.

Moving on to step 16:
678 can be fit into 6120 9 times, resulting in a remainder of 18.
The next digit of our result is 9. 
Result so far: 18896.10619469
The remainder is 18 after subtracting 6102 from 6120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

The final outcome is 18896.10619469, with a leftover of 1.8e-08.