Let's divide 10163221 by 398
Let's see how many times 398 fits into 10163221.

Moving on to step 1:
398 goes into 1 0 times with a remainder of 1.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 1, we get 1.
Include the next digit (0) from the dividend after 1, then repeat: 10 / 398

Let's proceed to step 2:
The number 398 fits into 10 0 times, leaving a remainder of 10.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 10, we end up with 10.
Take the next digit (1) from the dividend and append it to 10, then repeat: 101 / 398

Let's proceed to step 3:
If we divide 101 by 398, we get 0 and a remainder of 101.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 101 to get 101.
Append the next digit (6) from the dividend to 101 and continue with: 1016 / 398

Moving on to step 4:
If we divide 1016 by 398, we get 2 and a remainder of 220.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
If we subtract 796 from 1016, we get 220.
Bring next digit (3) of the dividend behind the 220 and repeat the process: 2203 / 398

On to step 5:
2203 divided by 398 is 5 with a remainder of 213.
Put 5 as the next digit of the answer. 
Result so far: 25.0
If we subtract 1990 from 2203, we get 213.
Grab the next digit (2) from the dividend, add it to 213, then carry on: 2132 / 398

Advancing to step 6:
If we divide 2132 by 398, we get 5 and a remainder of 142.
Record the quotient 5 as the next digit in the result. 
Result so far: 255.0
The remainder is 142 after subtracting 1990 from 2132.
Append the next digit (2) from the dividend to 142 and continue with: 1422 / 398

Advancing to step 7:
The number 398 fits into 1422 3 times, leaving a remainder of 228.
Use 3 as the next digit of our solution. 
Result so far: 2553.0
Deduct 1194 from 1422 and we're left with 228.
Grab the next digit (1) from the dividend, add it to 228, then carry on: 2281 / 398

Moving on to step 8:
The number 398 fits into 2281 5 times, leaving a remainder of 291.
Put 5 as the next digit of the answer. 
Result so far: 25535.0
If we subtract 1990 from 2281, we get 291.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2910, and continue the process.

Going ahead to step 9:
398 can be fit into 2910 7 times, resulting in a remainder of 124.
Put 7 as the next digit of the answer. 
Result so far: 25535.7
If we subtract 2786 from 2910, we get 124.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1240, and continue the process.

Going ahead to step 10:
398 can be fit into 1240 3 times, resulting in a remainder of 46.
The next digit of our result is 3. 
Result so far: 25535.73
Subtract 1194 from 1240 to get 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Step 11:
398 can be fit into 460 1 times, resulting in a remainder of 62.
The number 1 becomes the next digit in our result. 
Result so far: 25535.731
If we take 398 away from 460, we end up with 62.
Since there are no more digits in the dividend, we add a zero to the remainder making it 620, and continue the process.

Going ahead to step 12:
620 divided by 398 is 1 with a remainder of 222.
Record the quotient 1 as the next digit in the result. 
Result so far: 25535.7311
If we subtract 398 from 620, we get 222.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2220, and continue the process.

After the division, we end up with 25535.7311 and a remainder of 0.00222.