668560 ÷ 78 
We want to figure out the number of times 668560 can be divided by 78.

Advancing to step 1:
78 goes into 6 0 times with a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 6 after subtracting 0 from 6.
Append the next digit (6) from the dividend to 6 and continue with: 66 / 78

Let's proceed to step 2:
When dividing 66 by 78, we get 0 with a remainder of 66.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 66, we end up with 66.
Include the next digit (8) from the dividend after 66, then repeat: 668 / 78

Moving on to step 3:
If we divide 668 by 78, we get 8 and a remainder of 44.
The next digit of our result is 8. 
Result so far: 8.0
If we subtract 624 from 668, we get 44.
Bring next digit (5) of the dividend behind the 44 and repeat the process: 445 / 78

Advancing to step 4:
445 divided by 78 is 5 with a remainder of 55.
Write down 5 as next digit of the result. 
Result so far: 85.0
The remainder is 55 after subtracting 390 from 445.
Fetch the next digit (6) from the dividend, attach it to 55 and continue: 556 / 78

Advancing to step 5:
556 divided by 78 is 7 with a remainder of 10.
The number 7 becomes the next digit in our result. 
Result so far: 857.0
If we take 546 away from 556, we end up with 10.
Take the next digit (0) from the dividend and append it to 10, then repeat: 100 / 78

Moving on to step 6:
78 goes into 100 1 times with a remainder of 22.
Record the quotient 1 as the next digit in the result. 
Result so far: 8571.0
The remainder is 22 after subtracting 78 from 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Let's proceed to step 7:
78 goes into 220 2 times with a remainder of 64.
The number 2 becomes the next digit in our result. 
Result so far: 8571.2
If we subtract 156 from 220, we 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.

Advancing to step 8:
If we divide 640 by 78, we get 8 and a remainder of 16.
The next digit of our result is 8. 
Result so far: 8571.28
The remainder is 16 after subtracting 624 from 640.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Going ahead to step 9:
78 goes into 160 2 times with a remainder of 4.
The next digit of our result is 2. 
Result so far: 8571.282
Subtracting 156 from 160 leaves us with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Moving on to step 10:
78 can be fit into 40 0 times, resulting in a remainder of 40.
The next digit of our result is 0. 
Result so far: 8571.282
If we take 0 away from 40, we end up with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Let's proceed to step 11:
If we divide 400 by 78, we get 5 and a remainder of 10.
Write down 5 as next digit of the result. 
Result so far: 8571.28205
The remainder is 10 after subtracting 390 from 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

On to step 12:
78 can be fit into 100 1 times, resulting in a remainder of 22.
Use 1 as the next digit of our solution. 
Result so far: 8571.282051
Subtracting 78 from 100 leaves us with 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

On to step 13:
220 divided by 78 is 2 with a remainder of 64.
Use 2 as the next digit of our solution. 
Result so far: 8571.2820512
The remainder is 64 after subtracting 156 from 220.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Let's proceed to step 14:
78 goes into 640 8 times with a remainder of 16.
Write down 8 as next digit of the result. 
Result so far: 8571.28205128
If we subtract 624 from 640, we get 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

The quotient of the division is 8571.28205128, and the remainder is 1.6e-08.