21452309 ÷ 447 
We want to divide 21452309 by 447.

Advancing to step 1:
The number 447 fits into 2 0 times, leaving a remainder of 2.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 2, we get 2.
Grab the next digit (1) from the dividend, add it to 2, then carry on: 21 / 447

Advancing to step 2:
447 can be fit into 21 0 times, resulting in a remainder of 21.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 21 and we're left with 21.
Bring next digit (4) of the dividend behind the 21 and repeat the process: 214 / 447

Advancing to step 3:
447 can be fit into 214 0 times, resulting in a remainder of 214.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 214 after subtracting 0 from 214.
Append the next digit (5) from the dividend to 214 and continue with: 2145 / 447

Going ahead to step 4:
447 can be fit into 2145 4 times, resulting in a remainder of 357.
Use 4 as the next digit of our solution. 
Result so far: 4.0
If we take 1788 away from 2145, we end up with 357.
Include the next digit (2) from the dividend after 357, then repeat: 3572 / 447

Going ahead to step 5:
447 can be fit into 3572 7 times, resulting in a remainder of 443.
Put 7 as the next digit of the answer. 
Result so far: 47.0
Deduct 3129 from 3572 and we're left with 443.
Grab the next digit (3) from the dividend, add it to 443, then carry on: 4433 / 447

Let's proceed to step 6:
If we divide 4433 by 447, we get 9 and a remainder of 410.
Put 9 as the next digit of the answer. 
Result so far: 479.0
The remainder is 410 after subtracting 4023 from 4433.
Bring next digit (0) of the dividend behind the 410 and repeat the process: 4100 / 447

Let's proceed to step 7:
447 goes into 4100 9 times with a remainder of 77.
The number 9 becomes the next digit in our result. 
Result so far: 4799.0
Subtract 4023 from 4100 to get 77.
Take the next digit (9) from the dividend and append it to 77, then repeat: 779 / 447

Going ahead to step 8:
If we divide 779 by 447, we get 1 and a remainder of 332.
Put 1 as the next digit of the answer. 
Result so far: 47991.0
Deduct 447 from 779 and we're left with 332.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3320, and continue the process.

Going ahead to step 9:
The number 447 fits into 3320 7 times, leaving a remainder of 191.
The number 7 becomes the next digit in our result. 
Result so far: 47991.7
If we subtract 3129 from 3320, we get 191.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1910, and continue the process.

Advancing to step 10:
1910 divided by 447 is 4 with a remainder of 122.
Write down 4 as next digit of the result. 
Result so far: 47991.74
Subtracting 1788 from 1910 leaves us with 122.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1220, and continue the process.

Going ahead to step 11:
447 goes into 1220 2 times with a remainder of 326.
Record the quotient 2 as the next digit in the result. 
Result so far: 47991.742
Subtracting 894 from 1220 leaves us with 326.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3260, and continue the process.

Going ahead to step 12:
447 can be fit into 3260 7 times, resulting in a remainder of 131.
Use 7 as the next digit of our solution. 
Result so far: 47991.7427
Subtracting 3129 from 3260 leaves us with 131.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1310, and continue the process.

Advancing to step 13:
1310 divided by 447 is 2 with a remainder of 416.
Use 2 as the next digit of our solution. 
Result so far: 47991.74272
If we subtract 894 from 1310, we get 416.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4160, and continue the process.

Advancing to step 14:
447 can be fit into 4160 9 times, resulting in a remainder of 137.
Write down 9 as next digit of the result. 
Result so far: 47991.742729
If we subtract 4023 from 4160, we get 137.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1370, and continue the process.

Step 15:
When dividing 1370 by 447, we get 3 with a remainder of 29.
The number 3 becomes the next digit in our result. 
Result so far: 47991.7427293
Subtracting 1341 from 1370 leaves us with 29.
Since there are no more digits in the dividend, we add a zero to the remainder making it 290, and continue the process.

Going ahead to step 16:
290 divided by 447 is 0 with a remainder of 290.
The next digit of our result is 0. 
Result so far: 47991.7427293
Subtracting 0 from 290 leaves us with 290.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2900, and continue the process.

In conclusion, the division gives 47991.7427293 with a balance of 2.9e-07.