We're dividing 636165 by 78 
Let's see how many times 78 fits into 636165.

On to step 1:
6 divided by 78 is 0 with a remainder of 6.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 6 to get 6.
Append the next digit (3) from the dividend to 6 and continue with: 63 / 78

Advancing to step 2:
The number 78 fits into 63 0 times, leaving a remainder of 63.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 63 after subtracting 0 from 63.
Fetch the next digit (6) from the dividend, attach it to 63 and continue: 636 / 78

Going ahead to step 3:
If we divide 636 by 78, we get 8 and a remainder of 12.
Write down 8 as next digit of the result. 
Result so far: 8.0
Subtract 624 from 636 to get 12.
Bring next digit (1) of the dividend behind the 12 and repeat the process: 121 / 78

Advancing to step 4:
78 goes into 121 1 times with a remainder of 43.
Record the quotient 1 as the next digit in the result. 
Result so far: 81.0
Deduct 78 from 121 and we're left with 43.
Grab the next digit (6) from the dividend, add it to 43, then carry on: 436 / 78

Going ahead to step 5:
The number 78 fits into 436 5 times, leaving a remainder of 46.
Use 5 as the next digit of our solution. 
Result so far: 815.0
Subtract 390 from 436 to get 46.
Take the next digit (5) from the dividend and append it to 46, then repeat: 465 / 78

Step 6:
78 goes into 465 5 times with a remainder of 75.
Put 5 as the next digit of the answer. 
Result so far: 8155.0
Deduct 390 from 465 and we're left with 75.
Since there are no more digits in the dividend, we add a zero to the remainder making it 750, and continue the process.

Moving on to step 7:
750 divided by 78 is 9 with a remainder of 48.
Use 9 as the next digit of our solution. 
Result so far: 8155.9
The remainder is 48 after subtracting 702 from 750.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Advancing to step 8:
78 can be fit into 480 6 times, resulting in a remainder of 12.
The number 6 becomes the next digit in our result. 
Result so far: 8155.96
If we subtract 468 from 480, we get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Moving on to step 9:
78 goes into 120 1 times with a remainder of 42.
The number 1 becomes the next digit in our result. 
Result so far: 8155.961
The remainder is 42 after subtracting 78 from 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Let's proceed to step 10:
78 goes into 420 5 times with a remainder of 30.
Write down 5 as next digit of the result. 
Result so far: 8155.9615
Deduct 390 from 420 and we're left with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Advancing to step 11:
78 goes into 300 3 times with a remainder of 66.
Use 3 as the next digit of our solution. 
Result so far: 8155.96153
Subtracting 234 from 300 leaves us with 66.
Since there are no more digits in the dividend, we add a zero to the remainder making it 660, and continue the process.

Step 12:
78 can be fit into 660 8 times, resulting in a remainder of 36.
Use 8 as the next digit of our solution. 
Result so far: 8155.961538
The remainder is 36 after subtracting 624 from 660.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Let's proceed to step 13:
When dividing 360 by 78, we get 4 with a remainder of 48.
Put 4 as the next digit of the answer. 
Result so far: 8155.9615384
If we subtract 312 from 360, we get 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

On to step 14:
If we divide 480 by 78, we get 6 and a remainder of 12.
Record the quotient 6 as the next digit in the result. 
Result so far: 8155.96153846
Subtract 468 from 480 to get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

The final result is 8155.96153846 with a remainder of 1.2e-08.