447223 divided by 21 
Let's see how many times 21 fits into 447223.

Moving on to step 1:
If we divide 4 by 21, we get 0 and a remainder of 4.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 4, we end up with 4.
Bring next digit (4) of the dividend behind the 4 and repeat the process: 44 / 21

Let's proceed to step 2:
When dividing 44 by 21, we get 2 with a remainder of 2.
Put 2 as the next digit of the answer. 
Result so far: 2.0
If we subtract 42 from 44, we get 2.
Bring next digit (7) of the dividend behind the 2 and repeat the process: 27 / 21

Let's proceed to step 3:
21 goes into 27 1 times with a remainder of 6.
The number 1 becomes the next digit in our result. 
Result so far: 21.0
The remainder is 6 after subtracting 21 from 27.
Grab the next digit (2) from the dividend, add it to 6, then carry on: 62 / 21

Moving on to step 4:
When dividing 62 by 21, we get 2 with a remainder of 20.
The number 2 becomes the next digit in our result. 
Result so far: 212.0
If we subtract 42 from 62, we get 20.
Grab the next digit (2) from the dividend, add it to 20, then carry on: 202 / 21

Advancing to step 5:
21 can be fit into 202 9 times, resulting in a remainder of 13.
The number 9 becomes the next digit in our result. 
Result so far: 2129.0
Subtracting 189 from 202 leaves us with 13.
Fetch the next digit (3) from the dividend, attach it to 13 and continue: 133 / 21

Moving on to step 6:
133 divided by 21 is 6 with a remainder of 7.
Use 6 as the next digit of our solution. 
Result so far: 21296.0
Deduct 126 from 133 and we're left with 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Moving on to step 7:
70 divided by 21 is 3 with a remainder of 7.
Write down 3 as next digit of the result. 
Result so far: 21296.3
The remainder is 7 after subtracting 63 from 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Moving on to step 8:
21 can be fit into 70 3 times, resulting in a remainder of 7.
The number 3 becomes the next digit in our result. 
Result so far: 21296.33
Subtract 63 from 70 to get 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

The final result is 21296.33 with a remainder of 0.007.