We're dividing 448754 by 21 
We're looking to find how many times 21 goes into 448754.

Step 1:
21 can be fit into 4 0 times, resulting in a remainder of 4.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 4 and we're left with 4.
Include the next digit (4) from the dividend after 4, then repeat: 44 / 21

Let's proceed to step 2:
When dividing 44 by 21, we get 2 with a remainder of 2.
The next digit of our result is 2. 
Result so far: 2.0
Subtract 42 from 44 to get 2.
Grab the next digit (8) from the dividend, add it to 2, then carry on: 28 / 21

Going ahead to step 3:
If we divide 28 by 21, we get 1 and a remainder of 7.
Record the quotient 1 as the next digit in the result. 
Result so far: 21.0
Subtracting 21 from 28 leaves us with 7.
Fetch the next digit (7) from the dividend, attach it to 7 and continue: 77 / 21

Let's proceed to step 4:
77 divided by 21 is 3 with a remainder of 14.
Use 3 as the next digit of our solution. 
Result so far: 213.0
If we take 63 away from 77, we end up with 14.
Append the next digit (5) from the dividend to 14 and continue with: 145 / 21

Moving on to step 5:
When dividing 145 by 21, we get 6 with a remainder of 19.
Put 6 as the next digit of the answer. 
Result so far: 2136.0
If we subtract 126 from 145, we get 19.
Bring next digit (4) of the dividend behind the 19 and repeat the process: 194 / 21

Going ahead to step 6:
21 goes into 194 9 times with a remainder of 5.
Record the quotient 9 as the next digit in the result. 
Result so far: 21369.0
If we subtract 189 from 194, we get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Advancing to step 7:
50 divided by 21 is 2 with a remainder of 8.
Write down 2 as next digit of the result. 
Result so far: 21369.2
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.

Step 8:
21 goes into 80 3 times with a remainder of 17.
Put 3 as the next digit of the answer. 
Result so far: 21369.23
Subtracting 63 from 80 leaves us with 17.
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 9:
If we divide 170 by 21, we get 8 and a remainder of 2.
Record the quotient 8 as the next digit in the result. 
Result so far: 21369.238
If we subtract 168 from 170, we get 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 10:
If we divide 20 by 21, we get 0 and a remainder of 20.
The next digit of our result is 0. 
Result so far: 21369.238
If we take 0 away from 20, we end up 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.

Advancing to step 11:
21 goes into 200 9 times with a remainder of 11.
Use 9 as the next digit of our solution. 
Result so far: 21369.23809
Deduct 189 from 200 and we're left with 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Advancing to step 12:
21 goes into 110 5 times with a remainder of 5.
The number 5 becomes the next digit in our result. 
Result so far: 21369.238095
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.

Let's proceed to step 13:
When dividing 50 by 21, we get 2 with a remainder of 8.
The number 2 becomes the next digit in our result. 
Result so far: 21369.2380952
If we subtract 42 from 50, we get 8.
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 14:
The number 21 fits into 80 3 times, leaving a remainder of 17.
Write down 3 as next digit of the result. 
Result so far: 21369.23809523
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.

The final result is 21369.23809523 with a remainder of 1.7e-08.