439434 ÷ 51 
Our goal is to divide 439434 by 51.

On to step 1:
If we divide 4 by 51, we get 0 and a remainder of 4.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 4 after subtracting 0 from 4.
Fetch the next digit (3) from the dividend, attach it to 4 and continue: 43 / 51

Moving on to step 2:
51 goes into 43 0 times with a remainder of 43.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 43, we end up with 43.
Include the next digit (9) from the dividend after 43, then repeat: 439 / 51

Let's proceed to step 3:
51 goes into 439 8 times with a remainder of 31.
Use 8 as the next digit of our solution. 
Result so far: 8.0
Subtracting 408 from 439 leaves us with 31.
Append the next digit (4) from the dividend to 31 and continue with: 314 / 51

Going ahead to step 4:
When dividing 314 by 51, we get 6 with a remainder of 8.
The number 6 becomes the next digit in our result. 
Result so far: 86.0
If we take 306 away from 314, we end up with 8.
Take the next digit (3) from the dividend and append it to 8, then repeat: 83 / 51

On to step 5:
If we divide 83 by 51, we get 1 and a remainder of 32.
Use 1 as the next digit of our solution. 
Result so far: 861.0
If we subtract 51 from 83, we get 32.
Bring next digit (4) of the dividend behind the 32 and repeat the process: 324 / 51

Advancing to step 6:
If we divide 324 by 51, we get 6 and a remainder of 18.
The next digit of our result is 6. 
Result so far: 8616.0
If we take 306 away from 324, we end up with 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Going ahead to step 7:
If we divide 180 by 51, we get 3 and a remainder of 27.
The next digit of our result is 3. 
Result so far: 8616.3
Deduct 153 from 180 and we're left with 27.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

Let's proceed to step 8:
If we divide 270 by 51, we get 5 and a remainder of 15.
Record the quotient 5 as the next digit in the result. 
Result so far: 8616.35
Deduct 255 from 270 and we're left with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

On to step 9:
150 divided by 51 is 2 with a remainder of 48.
Record the quotient 2 as the next digit in the result. 
Result so far: 8616.352
Deduct 102 from 150 and we're left with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Moving on to step 10:
51 can be fit into 480 9 times, resulting in a remainder of 21.
Record the quotient 9 as the next digit in the result. 
Result so far: 8616.3529
If we subtract 459 from 480, we get 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

On to step 11:
51 goes into 210 4 times with a remainder of 6.
Use 4 as the next digit of our solution. 
Result so far: 8616.35294
Subtract 204 from 210 to get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Moving on to step 12:
60 divided by 51 is 1 with a remainder of 9.
Write down 1 as next digit of the result. 
Result so far: 8616.352941
If we subtract 51 from 60, we get 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Moving on to step 13:
When dividing 90 by 51, we get 1 with a remainder of 39.
Record the quotient 1 as the next digit in the result. 
Result so far: 8616.3529411
The remainder is 39 after subtracting 51 from 90.
Since there are no more digits in the dividend, we add a zero to the remainder making it 390, and continue the process.

After the division, we end up with 8616.3529411 and a remainder of 3.9e-07.