Let's divide 21549823 by 408
We want to divide 21549823 by 408.

Let's proceed to step 1:
The number 408 fits into 2 0 times, leaving 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.
Append the next digit (1) from the dividend to 2 and continue with: 21 / 408

Going ahead to step 2:
If we divide 21 by 408, we get 0 and a remainder of 21.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 21 leaves us with 21.
Fetch the next digit (5) from the dividend, attach it to 21 and continue: 215 / 408

Let's proceed to step 3:
When dividing 215 by 408, we get 0 with a remainder of 215.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 215 to get 215.
Include the next digit (4) from the dividend after 215, then repeat: 2154 / 408

Let's proceed to step 4:
The number 408 fits into 2154 5 times, leaving a remainder of 114.
Put 5 as the next digit of the answer. 
Result so far: 5.0
If we subtract 2040 from 2154, we get 114.
Take the next digit (9) from the dividend and append it to 114, then repeat: 1149 / 408

On to step 5:
408 goes into 1149 2 times with a remainder of 333.
The number 2 becomes the next digit in our result. 
Result so far: 52.0
The remainder is 333 after subtracting 816 from 1149.
Include the next digit (8) from the dividend after 333, then repeat: 3338 / 408

Going ahead to step 6:
If we divide 3338 by 408, we get 8 and a remainder of 74.
The next digit of our result is 8. 
Result so far: 528.0
Subtract 3264 from 3338 to get 74.
Take the next digit (2) from the dividend and append it to 74, then repeat: 742 / 408

Moving on to step 7:
If we divide 742 by 408, we get 1 and a remainder of 334.
Write down 1 as next digit of the result. 
Result so far: 5281.0
Subtracting 408 from 742 leaves us with 334.
Take the next digit (3) from the dividend and append it to 334, then repeat: 3343 / 408

Advancing to step 8:
When dividing 3343 by 408, we get 8 with a remainder of 79.
Record the quotient 8 as the next digit in the result. 
Result so far: 52818.0
Deduct 3264 from 3343 and we're left with 79.
Since there are no more digits in the dividend, we add a zero to the remainder making it 790, and continue the process.

Moving on to step 9:
The number 408 fits into 790 1 times, leaving a remainder of 382.
Record the quotient 1 as the next digit in the result. 
Result so far: 52818.1
The remainder is 382 after subtracting 408 from 790.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3820, and continue the process.

Step 10:
3820 divided by 408 is 9 with a remainder of 148.
Write down 9 as next digit of the result. 
Result so far: 52818.19
The remainder is 148 after subtracting 3672 from 3820.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1480, and continue the process.

Advancing to step 11:
408 goes into 1480 3 times with a remainder of 256.
The number 3 becomes the next digit in our result. 
Result so far: 52818.193
The remainder is 256 after subtracting 1224 from 1480.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2560, and continue the process.

Moving on to step 12:
The number 408 fits into 2560 6 times, leaving a remainder of 112.
Write down 6 as next digit of the result. 
Result so far: 52818.1936
Subtract 2448 from 2560 to get 112.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1120, and continue the process.

Advancing to step 13:
If we divide 1120 by 408, we get 2 and a remainder of 304.
The number 2 becomes the next digit in our result. 
Result so far: 52818.19362
Subtracting 816 from 1120 leaves us with 304.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3040, and continue the process.

On to step 14:
If we divide 3040 by 408, we get 7 and a remainder of 184.
Use 7 as the next digit of our solution. 
Result so far: 52818.193627
Deduct 2856 from 3040 and we're left with 184.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1840, and continue the process.

Moving on to step 15:
The number 408 fits into 1840 4 times, leaving a remainder of 208.
Use 4 as the next digit of our solution. 
Result so far: 52818.1936274
If we take 1632 away from 1840, we end up with 208.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2080, and continue the process.

Advancing to step 16:
The number 408 fits into 2080 5 times, leaving a remainder of 40.
Put 5 as the next digit of the answer. 
Result so far: 52818.19362745
If we subtract 2040 from 2080, we get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

In conclusion, the division gives 52818.19362745 with a balance of 4e-08.