We divide 408931 by 51
We're looking to find how many times 51 goes into 408931.

Moving on to step 1:
51 can be fit into 4 0 times, resulting in a remainder of 4.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 4 to get 4.
Append the next digit (0) from the dividend to 4 and continue with: 40 / 51

Advancing to step 2:
40 divided by 51 is 0 with a remainder of 40.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 40 leaves us with 40.
Append the next digit (8) from the dividend to 40 and continue with: 408 / 51

Step 3:
408 divided by 51 is 8 with a remainder of 0.
The next digit of our result is 8. 
Result so far: 8.0
Subtract 408 from 408 to get 0.
Grab the next digit (9) from the dividend, add it to 0, then carry on: 9 / 51

Advancing to step 4:
9 divided by 51 is 0 with a remainder of 9.
The number 0 becomes the next digit in our result. 
Result so far: 80.0
If we subtract 0 from 9, we get 9.
Grab the next digit (3) from the dividend, add it to 9, then carry on: 93 / 51

Going ahead to step 5:
51 goes into 93 1 times with a remainder of 42.
The number 1 becomes the next digit in our result. 
Result so far: 801.0
If we take 51 away from 93, we end up with 42.
Fetch the next digit (1) from the dividend, attach it to 42 and continue: 421 / 51

Let's proceed to step 6:
The number 51 fits into 421 8 times, leaving a remainder of 13.
Use 8 as the next digit of our solution. 
Result so far: 8018.0
Subtracting 408 from 421 leaves us with 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Let's proceed to step 7:
51 goes into 130 2 times with a remainder of 28.
Put 2 as the next digit of the answer. 
Result so far: 8018.2
Deduct 102 from 130 and we're left with 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Moving on to step 8:
280 divided by 51 is 5 with a remainder of 25.
The number 5 becomes the next digit in our result. 
Result so far: 8018.25
If we subtract 255 from 280, we get 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Step 9:
250 divided by 51 is 4 with a remainder of 46.
The number 4 becomes the next digit in our result. 
Result so far: 8018.254
Subtract 204 from 250 to get 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Step 10:
51 can be fit into 460 9 times, resulting in a remainder of 1.
Write down 9 as next digit of the result. 
Result so far: 8018.2549
Subtracting 459 from 460 leaves us with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Moving on to step 11:
51 can be fit into 10 0 times, resulting in a remainder of 10.
The number 0 becomes the next digit in our result. 
Result so far: 8018.2549
If we take 0 away from 10, we end up with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

On to step 12:
The number 51 fits into 100 1 times, leaving a remainder of 49.
Put 1 as the next digit of the answer. 
Result so far: 8018.254901
Deduct 51 from 100 and we're left with 49.
Since there are no more digits in the dividend, we add a zero to the remainder making it 490, and continue the process.

Advancing to step 13:
The number 51 fits into 490 9 times, leaving a remainder of 31.
Use 9 as the next digit of our solution. 
Result so far: 8018.2549019
Deduct 459 from 490 and we're left with 31.
Since there are no more digits in the dividend, we add a zero to the remainder making it 310, and continue the process.

Advancing to step 14:
If we divide 310 by 51, we get 6 and a remainder of 4.
The next digit of our result is 6. 
Result so far: 8018.25490196
If we subtract 306 from 310, we get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

In conclusion, the division gives 8018.25490196 with a balance of 4e-09.