We look at the division of 784812 by 51 
We're looking to find how many times 51 goes into 784812.

Advancing to step 1:
51 can be fit into 7 0 times, resulting in a remainder of 7.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 7 after subtracting 0 from 7.
Include the next digit (8) from the dividend after 7, then repeat: 78 / 51

Moving on to step 2:
The number 51 fits into 78 1 times, leaving a remainder of 27.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
The remainder is 27 after subtracting 51 from 78.
Grab the next digit (4) from the dividend, add it to 27, then carry on: 274 / 51

Step 3:
274 divided by 51 is 5 with a remainder of 19.
Record the quotient 5 as the next digit in the result. 
Result so far: 15.0
Subtracting 255 from 274 leaves us with 19.
Include the next digit (8) from the dividend after 19, then repeat: 198 / 51

Moving on to step 4:
The number 51 fits into 198 3 times, leaving a remainder of 45.
The number 3 becomes the next digit in our result. 
Result so far: 153.0
Deduct 153 from 198 and we're left with 45.
Grab the next digit (1) from the dividend, add it to 45, then carry on: 451 / 51

Let's proceed to step 5:
451 divided by 51 is 8 with a remainder of 43.
Put 8 as the next digit of the answer. 
Result so far: 1538.0
Deduct 408 from 451 and we're left with 43.
Fetch the next digit (2) from the dividend, attach it to 43 and continue: 432 / 51

On to step 6:
If we divide 432 by 51, we get 8 and a remainder of 24.
Put 8 as the next digit of the answer. 
Result so far: 15388.0
Deduct 408 from 432 and we're left with 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Advancing to step 7:
51 can be fit into 240 4 times, resulting in a remainder of 36.
Put 4 as the next digit of the answer. 
Result so far: 15388.4
Deduct 204 from 240 and we're left with 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

On to step 8:
If we divide 360 by 51, we get 7 and a remainder of 3.
Put 7 as the next digit of the answer. 
Result so far: 15388.47
Subtracting 357 from 360 leaves us with 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Moving on to step 9:
When dividing 30 by 51, we get 0 with a remainder of 30.
Use 0 as the next digit of our solution. 
Result so far: 15388.47
The remainder is 30 after subtracting 0 from 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Step 10:
300 divided by 51 is 5 with a remainder of 45.
The number 5 becomes the next digit in our result. 
Result so far: 15388.4705
If we take 255 away from 300, we end up 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 11:
51 goes into 450 8 times with a remainder of 42.
Put 8 as the next digit of the answer. 
Result so far: 15388.47058
Deduct 408 from 450 and we're left with 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Moving on to step 12:
51 goes into 420 8 times with a remainder of 12.
The number 8 becomes the next digit in our result. 
Result so far: 15388.470588
If we take 408 away from 420, we end up 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 15388.470588 with a remaining 1.2e-06.