436401 divided by 51 
Our goal is to divide 436401 by 51.

Going ahead to step 1:
4 divided by 51 is 0 with a remainder of 4.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 4 to get 4.
Fetch the next digit (3) from the dividend, attach it to 4 and continue: 43 / 51

Let's proceed to step 2:
43 divided by 51 is 0 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.
Fetch the next digit (6) from the dividend, attach it to 43 and continue: 436 / 51

Going ahead to step 3:
51 can be fit into 436 8 times, resulting in a remainder of 28.
Record the quotient 8 as the next digit in the result. 
Result so far: 8.0
Subtracting 408 from 436 leaves us with 28.
Grab the next digit (4) from the dividend, add it to 28, then carry on: 284 / 51

Let's proceed to step 4:
51 can be fit into 284 5 times, resulting in a remainder of 29.
Write down 5 as next digit of the result. 
Result so far: 85.0
The remainder is 29 after subtracting 255 from 284.
Grab the next digit (0) from the dividend, add it to 29, then carry on: 290 / 51

Step 5:
51 can be fit into 290 5 times, resulting in a remainder of 35.
Put 5 as the next digit of the answer. 
Result so far: 855.0
Subtracting 255 from 290 leaves us with 35.
Append the next digit (1) from the dividend to 35 and continue with: 351 / 51

Let's proceed to step 6:
351 divided by 51 is 6 with a remainder of 45.
Put 6 as the next digit of the answer. 
Result so far: 8556.0
Deduct 306 from 351 and we're left with 45.
Since there are no more digits in the dividend, we add a zero to the remainder making it 450, and continue the process.

On to step 7:
51 goes into 450 8 times with a remainder of 42.
Record the quotient 8 as the next digit in the result. 
Result so far: 8556.8
The remainder is 42 after subtracting 408 from 450.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Advancing to step 8:
51 goes into 420 8 times with a remainder of 12.
Write down 8 as next digit of the result. 
Result so far: 8556.88
Deduct 408 from 420 and we're left with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Our division results in 8556.88 with a remaining 0.012.