We're dividing 21068940 by 48 
Our goal is to divide 21068940 by 48.

Let's proceed to step 1:
The number 48 fits into 2 0 times, leaving a remainder of 2.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 2, we end up with 2.
Fetch the next digit (1) from the dividend, attach it to 2 and continue: 21 / 48

Advancing to step 2:
The number 48 fits into 21 0 times, leaving a remainder of 21.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 21 and we're left with 21.
Fetch the next digit (0) from the dividend, attach it to 21 and continue: 210 / 48

On to step 3:
48 can be fit into 210 4 times, resulting in a remainder of 18.
Record the quotient 4 as the next digit in the result. 
Result so far: 4.0
Subtract 192 from 210 to get 18.
Grab the next digit (6) from the dividend, add it to 18, then carry on: 186 / 48

Going ahead to step 4:
If we divide 186 by 48, we get 3 and a remainder of 42.
The number 3 becomes the next digit in our result. 
Result so far: 43.0
Subtracting 144 from 186 leaves us with 42.
Grab the next digit (8) from the dividend, add it to 42, then carry on: 428 / 48

On to step 5:
The number 48 fits into 428 8 times, leaving a remainder of 44.
Put 8 as the next digit of the answer. 
Result so far: 438.0
The remainder is 44 after subtracting 384 from 428.
Grab the next digit (9) from the dividend, add it to 44, then carry on: 449 / 48

Going ahead to step 6:
If we divide 449 by 48, we get 9 and a remainder of 17.
Put 9 as the next digit of the answer. 
Result so far: 4389.0
Deduct 432 from 449 and we're left with 17.
Fetch the next digit (4) from the dividend, attach it to 17 and continue: 174 / 48

Let's proceed to step 7:
48 goes into 174 3 times with a remainder of 30.
The next digit of our result is 3. 
Result so far: 43893.0
Subtract 144 from 174 to get 30.
Fetch the next digit (0) from the dividend, attach it to 30 and continue: 300 / 48

Advancing to step 8:
When dividing 300 by 48, we get 6 with a remainder of 12.
Use 6 as the next digit of our solution. 
Result so far: 438936.0
The remainder is 12 after subtracting 288 from 300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

On to step 9:
The number 48 fits into 120 2 times, leaving a remainder of 24.
Put 2 as the next digit of the answer. 
Result so far: 438936.2
Deduct 96 from 120 and we're left with 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Advancing to step 10:
If we divide 240 by 48, we get 5 and a remainder of 0.
The next digit of our result is 5. 
Result so far: 438936.25
The remainder is 0 after subtracting 240 from 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Step 11:
When dividing 0 by 48, we get 0 with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 438936.25
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.

Step 12:
48 can be fit into 0 0 times, resulting in a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 438936.25
The remainder is 0 after subtracting 0 from 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

After the division, we end up with 438936.25 and a remainder of 0.0.