We're dividing 912321 by 10 
Let's see how many times 10 fits into 912321.

Going ahead to step 1:
If we divide 9 by 10, we get 0 and a remainder of 9.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 9 to get 9.
Grab the next digit (1) from the dividend, add it to 9, then carry on: 91 / 10

Step 2:
When dividing 91 by 10, we get 9 with a remainder of 1.
Write down 9 as next digit of the result. 
Result so far: 9.0
Subtract 90 from 91 to get 1.
Append the next digit (2) from the dividend to 1 and continue with: 12 / 10

Step 3:
The number 10 fits into 12 1 times, leaving a remainder of 2.
Put 1 as the next digit of the answer. 
Result so far: 91.0
Subtracting 10 from 12 leaves us with 2.
Bring next digit (3) of the dividend behind the 2 and repeat the process: 23 / 10

Moving on to step 4:
10 goes into 23 2 times with a remainder of 3.
The number 2 becomes the next digit in our result. 
Result so far: 912.0
The remainder is 3 after subtracting 20 from 23.
Bring next digit (2) of the dividend behind the 3 and repeat the process: 32 / 10

Moving on to step 5:
10 goes into 32 3 times with a remainder of 2.
The next digit of our result is 3. 
Result so far: 9123.0
The remainder is 2 after subtracting 30 from 32.
Include the next digit (1) from the dividend after 2, then repeat: 21 / 10

Advancing to step 6:
If we divide 21 by 10, we get 2 and a remainder of 1.
Put 2 as the next digit of the answer. 
Result so far: 91232.0
If we take 20 away from 21, we end up with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Advancing to step 7:
10 divided by 10 is 1 with a remainder of 0.
Write down 1 as next digit of the result. 
Result so far: 91232.1
Deduct 10 from 10 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.

Advancing to step 8:
10 can be fit into 0 0 times, resulting in a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 91232.1
Subtracting 0 from 0 leaves us 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.

On to step 9:
When dividing 0 by 10, we get 0 with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 91232.1
If we take 0 away from 0, we end up 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.

The quotient of the division is 91232.1, and the remainder is 0.0.