We divide 21576774 by 409
Let's see how many times 409 fits into 21576774.

Advancing to step 1:
409 goes into 2 0 times with 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.
Append the next digit (1) from the dividend to 2 and continue with: 21 / 409

On to step 2:
409 can be fit into 21 0 times, resulting in a remainder of 21.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 21 leaves us with 21.
Take the next digit (5) from the dividend and append it to 21, then repeat: 215 / 409

Let's proceed to step 3:
If we divide 215 by 409, we get 0 and a remainder of 215.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 215, we end up with 215.
Grab the next digit (7) from the dividend, add it to 215, then carry on: 2157 / 409

Advancing to step 4:
The number 409 fits into 2157 5 times, leaving a remainder of 112.
Put 5 as the next digit of the answer. 
Result so far: 5.0
The remainder is 112 after subtracting 2045 from 2157.
Take the next digit (6) from the dividend and append it to 112, then repeat: 1126 / 409

Let's proceed to step 5:
409 can be fit into 1126 2 times, resulting in a remainder of 308.
Write down 2 as next digit of the result. 
Result so far: 52.0
Subtract 818 from 1126 to get 308.
Grab the next digit (7) from the dividend, add it to 308, then carry on: 3087 / 409

Advancing to step 6:
409 can be fit into 3087 7 times, resulting in a remainder of 224.
The number 7 becomes the next digit in our result. 
Result so far: 527.0
The remainder is 224 after subtracting 2863 from 3087.
Fetch the next digit (7) from the dividend, attach it to 224 and continue: 2247 / 409

Moving on to step 7:
2247 divided by 409 is 5 with a remainder of 202.
Put 5 as the next digit of the answer. 
Result so far: 5275.0
Subtracting 2045 from 2247 leaves us with 202.
Take the next digit (4) from the dividend and append it to 202, then repeat: 2024 / 409

On to step 8:
If we divide 2024 by 409, we get 4 and a remainder of 388.
Write down 4 as next digit of the result. 
Result so far: 52754.0
If we subtract 1636 from 2024, we get 388.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3880, and continue the process.

Step 9:
409 goes into 3880 9 times with a remainder of 199.
The next digit of our result is 9. 
Result so far: 52754.9
Deduct 3681 from 3880 and we're left with 199.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1990, and continue the process.

Moving on to step 10:
If we divide 1990 by 409, we get 4 and a remainder of 354.
The number 4 becomes the next digit in our result. 
Result so far: 52754.94
Subtracting 1636 from 1990 leaves us with 354.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3540, and continue the process.

Going ahead to step 11:
When dividing 3540 by 409, we get 8 with a remainder of 268.
The next digit of our result is 8. 
Result so far: 52754.948
The remainder is 268 after subtracting 3272 from 3540.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2680, and continue the process.

Step 12:
409 goes into 2680 6 times with a remainder of 226.
Put 6 as the next digit of the answer. 
Result so far: 52754.9486
If we take 2454 away from 2680, we end up with 226.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2260, and continue the process.

On to step 13:
409 goes into 2260 5 times with a remainder of 215.
The number 5 becomes the next digit in our result. 
Result so far: 52754.94865
Deduct 2045 from 2260 and we're left with 215.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2150, and continue the process.

Advancing to step 14:
409 goes into 2150 5 times with a remainder of 105.
The next digit of our result is 5. 
Result so far: 52754.948655
If we subtract 2045 from 2150, we get 105.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1050, and continue the process.

The final result is 52754.948655 with a remainder of 1.05e-05.