48956271 divided by 21 
Our goal is to divide 48956271 by 21.

Going ahead to step 1:
The number 21 fits into 4 0 times, leaving a remainder of 4.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 4 and we're left with 4.
Fetch the next digit (8) from the dividend, attach it to 4 and continue: 48 / 21

On to step 2:
21 goes into 48 2 times with a remainder of 6.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
If we take 42 away from 48, we end up with 6.
Fetch the next digit (9) from the dividend, attach it to 6 and continue: 69 / 21

On to step 3:
21 goes into 69 3 times with a remainder of 6.
The next digit of our result is 3. 
Result so far: 23.0
If we subtract 63 from 69, we get 6.
Grab the next digit (5) from the dividend, add it to 6, then carry on: 65 / 21

On to step 4:
21 goes into 65 3 times with a remainder of 2.
Use 3 as the next digit of our solution. 
Result so far: 233.0
Subtract 63 from 65 to get 2.
Append the next digit (6) from the dividend to 2 and continue with: 26 / 21

On to step 5:
21 can be fit into 26 1 times, resulting in a remainder of 5.
The next digit of our result is 1. 
Result so far: 2331.0
The remainder is 5 after subtracting 21 from 26.
Bring next digit (2) of the dividend behind the 5 and repeat the process: 52 / 21

Step 6:
If we divide 52 by 21, we get 2 and a remainder of 10.
Record the quotient 2 as the next digit in the result. 
Result so far: 23312.0
If we subtract 42 from 52, we get 10.
Bring next digit (7) of the dividend behind the 10 and repeat the process: 107 / 21

Advancing to step 7:
If we divide 107 by 21, we get 5 and a remainder of 2.
Put 5 as the next digit of the answer. 
Result so far: 233125.0
Deduct 105 from 107 and we're left with 2.
Bring next digit (1) of the dividend behind the 2 and repeat the process: 21 / 21

Step 8:
21 divided by 21 is 1 with a remainder of 0.
The number 1 becomes the next digit in our result. 
Result so far: 2331251.0
Subtract 21 from 21 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.

Going ahead to step 9:
21 goes into 0 0 times with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 2331251.0
If we subtract 0 from 0, we 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.

Going ahead to step 10:
0 divided by 21 is 0 with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 2331251.0
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 final result is 2331251.0 with a remainder of 0.0.