We're dividing 783749 by 51 
We're looking to find how many times 51 goes into 783749.

Step 1:
51 goes into 7 0 times with a remainder of 7.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 7 leaves us with 7.
Take the next digit (8) from the dividend and append it to 7, then repeat: 78 / 51

On to step 2:
51 can be fit into 78 1 times, resulting in a remainder of 27.
Use 1 as the next digit of our solution. 
Result so far: 1.0
The remainder is 27 after subtracting 51 from 78.
Take the next digit (3) from the dividend and append it to 27, then repeat: 273 / 51

Advancing to step 3:
273 divided by 51 is 5 with a remainder of 18.
The next digit of our result is 5. 
Result so far: 15.0
Subtract 255 from 273 to get 18.
Include the next digit (7) from the dividend after 18, then repeat: 187 / 51

Going ahead to step 4:
The number 51 fits into 187 3 times, leaving a remainder of 34.
Put 3 as the next digit of the answer. 
Result so far: 153.0
The remainder is 34 after subtracting 153 from 187.
Grab the next digit (4) from the dividend, add it to 34, then carry on: 344 / 51

Step 5:
The number 51 fits into 344 6 times, leaving a remainder of 38.
The number 6 becomes the next digit in our result. 
Result so far: 1536.0
The remainder is 38 after subtracting 306 from 344.
Append the next digit (9) from the dividend to 38 and continue with: 389 / 51

On to step 6:
389 divided by 51 is 7 with a remainder of 32.
Write down 7 as next digit of the result. 
Result so far: 15367.0
If we subtract 357 from 389, we get 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Let's proceed to step 7:
51 goes into 320 6 times with a remainder of 14.
The number 6 becomes the next digit in our result. 
Result so far: 15367.6
Subtract 306 from 320 to get 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Advancing to step 8:
51 can be fit into 140 2 times, resulting in a remainder of 38.
Write down 2 as next digit of the result. 
Result so far: 15367.62
Deduct 102 from 140 and we're left with 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Let's proceed to step 9:
The number 51 fits into 380 7 times, leaving a remainder of 23.
Write down 7 as next digit of the result. 
Result so far: 15367.627
Subtracting 357 from 380 leaves us with 23.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

Advancing to step 10:
If we divide 230 by 51, we get 4 and a remainder of 26.
Put 4 as the next digit of the answer. 
Result so far: 15367.6274
Deduct 204 from 230 and we're left with 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Step 11:
The number 51 fits into 260 5 times, leaving a remainder of 5.
Put 5 as the next digit of the answer. 
Result so far: 15367.62745
Subtracting 255 from 260 leaves us with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Advancing to step 12:
50 divided by 51 is 0 with a remainder of 50.
The number 0 becomes the next digit in our result. 
Result so far: 15367.62745
If we take 0 away from 50, we end up with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Going ahead to step 13:
When dividing 500 by 51, we get 9 with a remainder of 41.
Record the quotient 9 as the next digit in the result. 
Result so far: 15367.6274509
The remainder is 41 after subtracting 459 from 500.
Since there are no more digits in the dividend, we add a zero to the remainder making it 410, and continue the process.

Going ahead to step 14:
51 can be fit into 410 8 times, resulting in a remainder of 2.
The number 8 becomes the next digit in our result. 
Result so far: 15367.62745098
Subtracting 408 from 410 leaves us with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Our division results in 15367.62745098 with a remaining 2e-09.