668636 divided by 10 
We want to figure out the number of times 668636 can be divided by 10.

On to step 1:
10 can be fit into 6 0 times, resulting in a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 6 after subtracting 0 from 6.
Include the next digit (6) from the dividend after 6, then repeat: 66 / 10

On to step 2:
66 divided by 10 is 6 with a remainder of 6.
Write down 6 as next digit of the result. 
Result so far: 6.0
If we subtract 60 from 66, we get 6.
Grab the next digit (8) from the dividend, add it to 6, then carry on: 68 / 10

Moving on to step 3:
The number 10 fits into 68 6 times, leaving a remainder of 8.
Record the quotient 6 as the next digit in the result. 
Result so far: 66.0
The remainder is 8 after subtracting 60 from 68.
Bring next digit (6) of the dividend behind the 8 and repeat the process: 86 / 10

Advancing to step 4:
10 can be fit into 86 8 times, resulting in a remainder of 6.
Write down 8 as next digit of the result. 
Result so far: 668.0
The remainder is 6 after subtracting 80 from 86.
Fetch the next digit (3) from the dividend, attach it to 6 and continue: 63 / 10

Advancing to step 5:
10 goes into 63 6 times with a remainder of 3.
The next digit of our result is 6. 
Result so far: 6686.0
The remainder is 3 after subtracting 60 from 63.
Grab the next digit (6) from the dividend, add it to 3, then carry on: 36 / 10

Going ahead to step 6:
10 can be fit into 36 3 times, resulting in a remainder of 6.
Record the quotient 3 as the next digit in the result. 
Result so far: 66863.0
If we take 30 away from 36, we end up with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Going ahead to step 7:
The number 10 fits into 60 6 times, leaving a remainder of 0.
Put 6 as the next digit of the answer. 
Result so far: 66863.6
Subtract 60 from 60 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

On to step 8:
The number 10 fits into 0 0 times, leaving a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 66863.6
If we subtract 0 from 0, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Moving on to step 9:
The number 10 fits into 0 0 times, leaving a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 66863.6
Deduct 0 from 0 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

After the division, we end up with 66863.6 and a remainder of 0.0.