We look at the division of 21589970 by 448 
Let's see how many times 448 fits into 21589970.

Step 1:
If we divide 2 by 448, we get 0 and a remainder of 2.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 2 leaves us with 2.
Include the next digit (1) from the dividend after 2, then repeat: 21 / 448

On to step 2:
448 goes into 21 0 times with a remainder of 21.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 21, we get 21.
Append the next digit (5) from the dividend to 21 and continue with: 215 / 448

On to step 3:
448 can be fit into 215 0 times, resulting in a remainder of 215.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 215, we get 215.
Append the next digit (8) from the dividend to 215 and continue with: 2158 / 448

Let's proceed to step 4:
If we divide 2158 by 448, we get 4 and a remainder of 366.
Record the quotient 4 as the next digit in the result. 
Result so far: 4.0
The remainder is 366 after subtracting 1792 from 2158.
Grab the next digit (9) from the dividend, add it to 366, then carry on: 3669 / 448

Going ahead to step 5:
3669 divided by 448 is 8 with a remainder of 85.
Use 8 as the next digit of our solution. 
Result so far: 48.0
Deduct 3584 from 3669 and we're left with 85.
Grab the next digit (9) from the dividend, add it to 85, then carry on: 859 / 448

Let's proceed to step 6:
859 divided by 448 is 1 with a remainder of 411.
Use 1 as the next digit of our solution. 
Result so far: 481.0
Subtracting 448 from 859 leaves us with 411.
Grab the next digit (7) from the dividend, add it to 411, then carry on: 4117 / 448

Let's proceed to step 7:
The number 448 fits into 4117 9 times, leaving a remainder of 85.
Put 9 as the next digit of the answer. 
Result so far: 4819.0
If we subtract 4032 from 4117, we get 85.
Bring next digit (0) of the dividend behind the 85 and repeat the process: 850 / 448

Advancing to step 8:
850 divided by 448 is 1 with a remainder of 402.
Put 1 as the next digit of the answer. 
Result so far: 48191.0
If we take 448 away from 850, we end up with 402.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4020, and continue the process.

Advancing to step 9:
If we divide 4020 by 448, we get 8 and a remainder of 436.
Write down 8 as next digit of the result. 
Result so far: 48191.8
The remainder is 436 after subtracting 3584 from 4020.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4360, and continue the process.

Let's proceed to step 10:
4360 divided by 448 is 9 with a remainder of 328.
Record the quotient 9 as the next digit in the result. 
Result so far: 48191.89
The remainder is 328 after subtracting 4032 from 4360.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3280, and continue the process.

Step 11:
448 can be fit into 3280 7 times, resulting in a remainder of 144.
Write down 7 as next digit of the result. 
Result so far: 48191.897
The remainder is 144 after subtracting 3136 from 3280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1440, and continue the process.

Going ahead to step 12:
448 goes into 1440 3 times with a remainder of 96.
Write down 3 as next digit of the result. 
Result so far: 48191.8973
If we subtract 1344 from 1440, we get 96.
Since there are no more digits in the dividend, we add a zero to the remainder making it 960, and continue the process.

On to step 13:
448 goes into 960 2 times with a remainder of 64.
The number 2 becomes the next digit in our result. 
Result so far: 48191.89732
If we subtract 896 from 960, we get 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

On to step 14:
448 goes into 640 1 times with a remainder of 192.
Record the quotient 1 as the next digit in the result. 
Result so far: 48191.897321
The remainder is 192 after subtracting 448 from 640.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1920, and continue the process.

On to step 15:
448 can be fit into 1920 4 times, resulting in a remainder of 128.
Put 4 as the next digit of the answer. 
Result so far: 48191.8973214
Subtract 1792 from 1920 to get 128.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1280, and continue the process.

Moving on to step 16:
448 can be fit into 1280 2 times, resulting in a remainder of 384.
Write down 2 as next digit of the result. 
Result so far: 48191.89732142
The remainder is 384 after subtracting 896 from 1280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3840, and continue the process.

The final outcome is 48191.89732142, with a leftover of 3.84e-07.