We look at the division of 645696 by 78 
We want to figure out the number of times 645696 can be divided by 78.

Step 1:
When dividing 6 by 78, we get 0 with a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 6 leaves us with 6.
Bring next digit (4) of the dividend behind the 6 and repeat the process: 64 / 78

On to step 2:
If we divide 64 by 78, we get 0 and a remainder of 64.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 64, we end up with 64.
Grab the next digit (5) from the dividend, add it to 64, then carry on: 645 / 78

Moving on to step 3:
When dividing 645 by 78, we get 8 with a remainder of 21.
Put 8 as the next digit of the answer. 
Result so far: 8.0
If we subtract 624 from 645, we get 21.
Include the next digit (6) from the dividend after 21, then repeat: 216 / 78

Advancing to step 4:
78 can be fit into 216 2 times, resulting in a remainder of 60.
Put 2 as the next digit of the answer. 
Result so far: 82.0
Subtract 156 from 216 to get 60.
Append the next digit (9) from the dividend to 60 and continue with: 609 / 78

Advancing to step 5:
The number 78 fits into 609 7 times, leaving a remainder of 63.
Record the quotient 7 as the next digit in the result. 
Result so far: 827.0
The remainder is 63 after subtracting 546 from 609.
Fetch the next digit (6) from the dividend, attach it to 63 and continue: 636 / 78

On to step 6:
636 divided by 78 is 8 with a remainder of 12.
Use 8 as the next digit of our solution. 
Result so far: 8278.0
The remainder is 12 after subtracting 624 from 636.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Advancing to step 7:
When dividing 120 by 78, we get 1 with a remainder of 42.
Put 1 as the next digit of the answer. 
Result so far: 8278.1
Deduct 78 from 120 and we're left 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.

Going ahead to step 8:
If we divide 420 by 78, we get 5 and a remainder of 30.
Write down 5 as next digit of the result. 
Result so far: 8278.15
Subtract 390 from 420 to get 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Step 9:
The number 78 fits into 300 3 times, leaving a remainder of 66.
Record the quotient 3 as the next digit in the result. 
Result so far: 8278.153
The remainder is 66 after subtracting 234 from 300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 660, and continue the process.

Let's proceed to step 10:
78 goes into 660 8 times with a remainder of 36.
The next digit of our result is 8. 
Result so far: 8278.1538
If we take 624 away from 660, we end up with 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Going ahead to step 11:
360 divided by 78 is 4 with a remainder of 48.
The next digit of our result is 4. 
Result so far: 8278.15384
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.

Moving on to step 12:
480 divided by 78 is 6 with a remainder of 12.
Put 6 as the next digit of the answer. 
Result so far: 8278.153846
The remainder is 12 after subtracting 468 from 480.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Step 13:
78 can be fit into 120 1 times, resulting in a remainder of 42.
The next digit of our result is 1. 
Result so far: 8278.1538461
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 14:
If we divide 420 by 78, we get 5 and a remainder of 30.
The number 5 becomes the next digit in our result. 
Result so far: 8278.15384615
If we take 390 away from 420, we end up 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.

After the division, we end up with 8278.15384615 and a remainder of 3e-08.