Let's divide 381221 by 10
We want to divide 381221 by 10.

Going ahead to step 1:
The number 10 fits into 3 0 times, leaving a remainder of 3.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 3, we get 3.
Take the next digit (8) from the dividend and append it to 3, then repeat: 38 / 10

Step 2:
If we divide 38 by 10, we get 3 and a remainder of 8.
Write down 3 as next digit of the result. 
Result so far: 3.0
The remainder is 8 after subtracting 30 from 38.
Fetch the next digit (1) from the dividend, attach it to 8 and continue: 81 / 10

On to step 3:
When dividing 81 by 10, we get 8 with a remainder of 1.
Record the quotient 8 as the next digit in the result. 
Result so far: 38.0
The remainder is 1 after subtracting 80 from 81.
Take the next digit (2) from the dividend and append it to 1, then repeat: 12 / 10

Step 4:
If we divide 12 by 10, we get 1 and a remainder of 2.
Record the quotient 1 as the next digit in the result. 
Result so far: 381.0
If we take 10 away from 12, we end up with 2.
Fetch the next digit (2) from the dividend, attach it to 2 and continue: 22 / 10

Let's proceed to step 5:
22 divided by 10 is 2 with a remainder of 2.
The number 2 becomes the next digit in our result. 
Result so far: 3812.0
Subtract 20 from 22 to get 2.
Include the next digit (1) from the dividend after 2, then repeat: 21 / 10

Let's proceed to step 6:
The number 10 fits into 21 2 times, leaving a remainder of 1.
The number 2 becomes the next digit in our result. 
Result so far: 38122.0
The remainder is 1 after subtracting 20 from 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

On to step 7:
If we divide 10 by 10, we get 1 and a remainder of 0.
Put 1 as the next digit of the answer. 
Result so far: 38122.1
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.

Let's proceed to step 8:
0 divided by 10 is 0 with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 38122.1
Subtract 0 from 0 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.

Advancing to step 9:
If we divide 0 by 10, we get 0 and a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 38122.1
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.

The final outcome is 38122.1, with a leftover of 0.0.