78409408 ÷ 678 
We want to divide 78409408 by 678.

Step 1:
678 can be fit into 7 0 times, resulting in a remainder of 7.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 7, we get 7.
Take the next digit (8) from the dividend and append it to 7, then repeat: 78 / 678

Step 2:
The number 678 fits into 78 0 times, leaving a remainder of 78.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 78, we get 78.
Take the next digit (4) from the dividend and append it to 78, then repeat: 784 / 678

Moving on to step 3:
784 divided by 678 is 1 with a remainder of 106.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Subtracting 678 from 784 leaves us with 106.
Bring next digit (0) of the dividend behind the 106 and repeat the process: 1060 / 678

Going ahead to step 4:
When dividing 1060 by 678, we get 1 with a remainder of 382.
Put 1 as the next digit of the answer. 
Result so far: 11.0
If we take 678 away from 1060, we end up with 382.
Grab the next digit (9) from the dividend, add it to 382, then carry on: 3829 / 678

Advancing to step 5:
If we divide 3829 by 678, we get 5 and a remainder of 439.
The next digit of our result is 5. 
Result so far: 115.0
If we take 3390 away from 3829, we end up with 439.
Bring next digit (4) of the dividend behind the 439 and repeat the process: 4394 / 678

Going ahead to step 6:
678 can be fit into 4394 6 times, resulting in a remainder of 326.
Put 6 as the next digit of the answer. 
Result so far: 1156.0
The remainder is 326 after subtracting 4068 from 4394.
Grab the next digit (0) from the dividend, add it to 326, then carry on: 3260 / 678

Let's proceed to step 7:
When dividing 3260 by 678, we get 4 with a remainder of 548.
Write down 4 as next digit of the result. 
Result so far: 11564.0
If we subtract 2712 from 3260, we get 548.
Include the next digit (8) from the dividend after 548, then repeat: 5488 / 678

On to step 8:
5488 divided by 678 is 8 with a remainder of 64.
Use 8 as the next digit of our solution. 
Result so far: 115648.0
Subtract 5424 from 5488 to get 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Step 9:
If we divide 640 by 678, we get 0 and a remainder of 640.
Record the quotient 0 as the next digit in the result. 
Result so far: 115648.0
If we take 0 away from 640, we end up with 640.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6400, and continue the process.

Advancing to step 10:
6400 divided by 678 is 9 with a remainder of 298.
Write down 9 as next digit of the result. 
Result so far: 115648.09
Deduct 6102 from 6400 and we're left with 298.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2980, and continue the process.

Advancing to step 11:
When dividing 2980 by 678, we get 4 with a remainder of 268.
The next digit of our result is 4. 
Result so far: 115648.094
If we subtract 2712 from 2980, we get 268.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2680, and continue the process.

Step 12:
2680 divided by 678 is 3 with a remainder of 646.
Use 3 as the next digit of our solution. 
Result so far: 115648.0943
Subtract 2034 from 2680 to get 646.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6460, and continue the process.

Step 13:
When dividing 6460 by 678, we get 9 with a remainder of 358.
The number 9 becomes the next digit in our result. 
Result so far: 115648.09439
Subtract 6102 from 6460 to get 358.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3580, and continue the process.

Advancing to step 14:
3580 divided by 678 is 5 with a remainder of 190.
The number 5 becomes the next digit in our result. 
Result so far: 115648.094395
Deduct 3390 from 3580 and we're left with 190.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1900, and continue the process.

Moving on to step 15:
If we divide 1900 by 678, we get 2 and a remainder of 544.
Use 2 as the next digit of our solution. 
Result so far: 115648.0943952
Subtract 1356 from 1900 to get 544.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5440, and continue the process.

Let's proceed to step 16:
678 can be fit into 5440 8 times, resulting in a remainder of 16.
Put 8 as the next digit of the answer. 
Result so far: 115648.09439528
Subtracting 5424 from 5440 leaves us with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Our division results in 115648.09439528 with a remaining 1.6e-08.