We're dividing 260093 by 21 
We're looking to find how many times 21 goes into 260093.

Going ahead to step 1:
21 can be fit into 2 0 times, resulting in a remainder of 2.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 2 and we're left with 2.
Take the next digit (6) from the dividend and append it to 2, then repeat: 26 / 21

On to step 2:
26 divided by 21 is 1 with a remainder of 5.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
If we subtract 21 from 26, we get 5.
Bring next digit (0) of the dividend behind the 5 and repeat the process: 50 / 21

Let's proceed to step 3:
The number 21 fits into 50 2 times, leaving a remainder of 8.
Write down 2 as next digit of the result. 
Result so far: 12.0
If we subtract 42 from 50, we get 8.
Bring next digit (0) of the dividend behind the 8 and repeat the process: 80 / 21

On to step 4:
21 goes into 80 3 times with a remainder of 17.
Write down 3 as next digit of the result. 
Result so far: 123.0
If we take 63 away from 80, we end up with 17.
Fetch the next digit (9) from the dividend, attach it to 17 and continue: 179 / 21

Moving on to step 5:
If we divide 179 by 21, we get 8 and a remainder of 11.
Record the quotient 8 as the next digit in the result. 
Result so far: 1238.0
Subtract 168 from 179 to get 11.
Grab the next digit (3) from the dividend, add it to 11, then carry on: 113 / 21

Advancing to step 6:
21 goes into 113 5 times with a remainder of 8.
Write down 5 as next digit of the result. 
Result so far: 12385.0
The remainder is 8 after subtracting 105 from 113.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

On to step 7:
21 goes into 80 3 times with a remainder of 17.
Record the quotient 3 as the next digit in the result. 
Result so far: 12385.3
The remainder is 17 after subtracting 63 from 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Let's proceed to step 8:
The number 21 fits into 170 8 times, leaving a remainder of 2.
The next digit of our result is 8. 
Result so far: 12385.38
Deduct 168 from 170 and we're left with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

On to step 9:
When dividing 20 by 21, we get 0 with a remainder of 20.
Record the quotient 0 as the next digit in the result. 
Result so far: 12385.38
Subtracting 0 from 20 leaves us with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Going ahead to step 10:
21 goes into 200 9 times with a remainder of 11.
Write down 9 as next digit of the result. 
Result so far: 12385.3809
The remainder is 11 after subtracting 189 from 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Going ahead to step 11:
When dividing 110 by 21, we get 5 with a remainder of 5.
Use 5 as the next digit of our solution. 
Result so far: 12385.38095
Subtracting 105 from 110 leaves us with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

On to step 12:
If we divide 50 by 21, we get 2 and a remainder of 8.
Record the quotient 2 as the next digit in the result. 
Result so far: 12385.380952
If we take 42 away from 50, we end up with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Going ahead to step 13:
21 goes into 80 3 times with a remainder of 17.
Put 3 as the next digit of the answer. 
Result so far: 12385.3809523
The remainder is 17 after subtracting 63 from 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Advancing to step 14:
170 divided by 21 is 8 with a remainder of 2.
Put 8 as the next digit of the answer. 
Result so far: 12385.38095238
If we take 168 away from 170, we end up with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

The final result is 12385.38095238 with a remainder of 2e-09.