We divide 21912274 by 400
We want to divide 21912274 by 400.

Let's proceed to step 1:
2 divided by 400 is 0 with a remainder of 2.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 2 after subtracting 0 from 2.
Fetch the next digit (1) from the dividend, attach it to 2 and continue: 21 / 400

Going ahead to step 2:
If we divide 21 by 400, we get 0 and 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.
Bring next digit (9) of the dividend behind the 21 and repeat the process: 219 / 400

Going ahead to step 3:
If we divide 219 by 400, we get 0 and a remainder of 219.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 219 leaves us with 219.
Take the next digit (1) from the dividend and append it to 219, then repeat: 2191 / 400

Going ahead to step 4:
When dividing 2191 by 400, we get 5 with a remainder of 191.
Put 5 as the next digit of the answer. 
Result so far: 5.0
Subtracting 2000 from 2191 leaves us with 191.
Grab the next digit (2) from the dividend, add it to 191, then carry on: 1912 / 400

Advancing to step 5:
1912 divided by 400 is 4 with a remainder of 312.
Use 4 as the next digit of our solution. 
Result so far: 54.0
If we take 1600 away from 1912, we end up with 312.
Take the next digit (2) from the dividend and append it to 312, then repeat: 3122 / 400

Step 6:
400 can be fit into 3122 7 times, resulting in a remainder of 322.
The number 7 becomes the next digit in our result. 
Result so far: 547.0
If we subtract 2800 from 3122, we get 322.
Grab the next digit (7) from the dividend, add it to 322, then carry on: 3227 / 400

Moving on to step 7:
400 goes into 3227 8 times with a remainder of 27.
Put 8 as the next digit of the answer. 
Result so far: 5478.0
Deduct 3200 from 3227 and we're left with 27.
Fetch the next digit (4) from the dividend, attach it to 27 and continue: 274 / 400

Going ahead to step 8:
400 can be fit into 274 0 times, resulting in a remainder of 274.
Put 0 as the next digit of the answer. 
Result so far: 54780.0
Deduct 0 from 274 and we're left with 274.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2740, and continue the process.

Going ahead to step 9:
400 goes into 2740 6 times with a remainder of 340.
Record the quotient 6 as the next digit in the result. 
Result so far: 54780.6
Subtracting 2400 from 2740 leaves us with 340.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3400, and continue the process.

Moving on to step 10:
The number 400 fits into 3400 8 times, leaving a remainder of 200.
The next digit of our result is 8. 
Result so far: 54780.68
Subtracting 3200 from 3400 leaves us with 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2000, and continue the process.

Step 11:
When dividing 2000 by 400, we get 5 with a remainder of 0.
Record the quotient 5 as the next digit in the result. 
Result so far: 54780.685
The remainder is 0 after subtracting 2000 from 2000.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

On to step 12:
400 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: 54780.685
If we take 0 away from 0, we end up 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.

On to step 13:
The number 400 fits into 0 0 times, leaving a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 54780.685
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.

The final outcome is 54780.685, with a leftover of 0.0.