21398 divided by 41 
Let's see how many times 41 fits into 21398.

On to step 1:
2 divided by 41 is 0 with a remainder of 2.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 2 leaves us with 2.
Fetch the next digit (1) from the dividend, attach it to 2 and continue: 21 / 41

On to step 2:
41 goes into 21 0 times with a remainder of 21.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 21 to get 21.
Grab the next digit (3) from the dividend, add it to 21, then carry on: 213 / 41

On to step 3:
The number 41 fits into 213 5 times, leaving a remainder of 8.
Write down 5 as next digit of the result. 
Result so far: 5.0
Subtract 205 from 213 to get 8.
Append the next digit (9) from the dividend to 8 and continue with: 89 / 41

Going ahead to step 4:
41 goes into 89 2 times with a remainder of 7.
Use 2 as the next digit of our solution. 
Result so far: 52.0
If we take 82 away from 89, we end up with 7.
Include the next digit (8) from the dividend after 7, then repeat: 78 / 41

Advancing to step 5:
The number 41 fits into 78 1 times, leaving a remainder of 37.
The next digit of our result is 1. 
Result so far: 521.0
The remainder is 37 after subtracting 41 from 78.
Since there are no more digits in the dividend, we add a zero to the remainder making it 370, and continue the process.

Going ahead to step 6:
41 goes into 370 9 times with a remainder of 1.
The next digit of our result is 9. 
Result so far: 521.9
Subtract 369 from 370 to get 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:
41 can be fit into 10 0 times, resulting in a remainder of 10.
Put 0 as the next digit of the answer. 
Result so far: 521.9
Subtract 0 from 10 to get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Step 8:
41 can be fit into 100 2 times, resulting in a remainder of 18.
The next digit of our result is 2. 
Result so far: 521.902
If we subtract 82 from 100, we get 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Let's proceed to step 9:
The number 41 fits into 180 4 times, leaving a remainder of 16.
Record the quotient 4 as the next digit in the result. 
Result so far: 521.9024
Subtract 164 from 180 to 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.

Going ahead to step 10:
If we divide 160 by 41, we get 3 and a remainder of 37.
Write down 3 as next digit of the result. 
Result so far: 521.90243
Deduct 123 from 160 and we're left with 37.
Since there are no more digits in the dividend, we add a zero to the remainder making it 370, and continue the process.

Advancing to step 11:
41 goes into 370 9 times with a remainder of 1.
Use 9 as the next digit of our solution. 
Result so far: 521.902439
If we take 369 away from 370, 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.

On to step 12:
If we divide 10 by 41, we get 0 and a remainder of 10.
Use 0 as the next digit of our solution. 
Result so far: 521.902439
If we subtract 0 from 10, we get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Let's proceed to step 13:
When dividing 100 by 41, we get 2 with a remainder of 18.
Use 2 as the next digit of our solution. 
Result so far: 521.90243902
Deduct 82 from 100 and we're left with 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

After the division, we end up with 521.90243902 and a remainder of 1.8e-08.