We look at the division of 670386 by 78 
We want to divide 670386 by 78.

Moving on to step 1:
6 divided by 78 is 0 with a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 6, we end up with 6.
Append the next digit (7) from the dividend to 6 and continue with: 67 / 78

Advancing to step 2:
78 can be fit into 67 0 times, resulting in a remainder of 67.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 67 to get 67.
Append the next digit (0) from the dividend to 67 and continue with: 670 / 78

Going ahead to step 3:
78 goes into 670 8 times with a remainder of 46.
The number 8 becomes the next digit in our result. 
Result so far: 8.0
If we subtract 624 from 670, we get 46.
Append the next digit (3) from the dividend to 46 and continue with: 463 / 78

Advancing to step 4:
463 divided by 78 is 5 with a remainder of 73.
Write down 5 as next digit of the result. 
Result so far: 85.0
Subtracting 390 from 463 leaves us with 73.
Bring next digit (8) of the dividend behind the 73 and repeat the process: 738 / 78

Advancing to step 5:
When dividing 738 by 78, we get 9 with a remainder of 36.
Record the quotient 9 as the next digit in the result. 
Result so far: 859.0
Subtract 702 from 738 to get 36.
Append the next digit (6) from the dividend to 36 and continue with: 366 / 78

Advancing to step 6:
78 can be fit into 366 4 times, resulting in a remainder of 54.
Use 4 as the next digit of our solution. 
Result so far: 8594.0
Deduct 312 from 366 and we're left with 54.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

Let's proceed to step 7:
When dividing 540 by 78, we get 6 with a remainder of 72.
Put 6 as the next digit of the answer. 
Result so far: 8594.6
The remainder is 72 after subtracting 468 from 540.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

Step 8:
If we divide 720 by 78, we get 9 and a remainder of 18.
Put 9 as the next digit of the answer. 
Result so far: 8594.69
If we subtract 702 from 720, we get 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Step 9:
180 divided by 78 is 2 with a remainder of 24.
The next digit of our result is 2. 
Result so far: 8594.692
The remainder is 24 after subtracting 156 from 180.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

On to step 10:
78 can be fit into 240 3 times, resulting in a remainder of 6.
Record the quotient 3 as the next digit in the result. 
Result so far: 8594.6923
The remainder is 6 after subtracting 234 from 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Let's proceed to step 11:
60 divided by 78 is 0 with a remainder of 60.
The number 0 becomes the next digit in our result. 
Result so far: 8594.6923
If we subtract 0 from 60, we get 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Let's proceed to step 12:
When dividing 600 by 78, we get 7 with a remainder of 54.
Put 7 as the next digit of the answer. 
Result so far: 8594.692307
If we subtract 546 from 600, we get 54.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

Step 13:
78 goes into 540 6 times with a remainder of 72.
Put 6 as the next digit of the answer. 
Result so far: 8594.6923076
Deduct 468 from 540 and we're left with 72.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

Going ahead to step 14:
If we divide 720 by 78, we get 9 and a remainder of 18.
The number 9 becomes the next digit in our result. 
Result so far: 8594.69230769
If we take 702 away from 720, we end up with 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Our division results in 8594.69230769 with a remaining 1.8e-08.