We're dividing 777960 by 51 
We want to divide 777960 by 51.

Let's proceed 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
If we take 0 away from 7, we end up with 7.
Include the next digit (7) from the dividend after 7, then repeat: 77 / 51

Let's proceed to step 2:
51 can be fit into 77 1 times, resulting in a remainder of 26.
The next digit of our result is 1. 
Result so far: 1.0
Deduct 51 from 77 and we're left with 26.
Fetch the next digit (7) from the dividend, attach it to 26 and continue: 267 / 51

On to step 3:
The number 51 fits into 267 5 times, leaving a remainder of 12.
Put 5 as the next digit of the answer. 
Result so far: 15.0
If we take 255 away from 267, we end up with 12.
Take the next digit (9) from the dividend and append it to 12, then repeat: 129 / 51

Advancing to step 4:
The number 51 fits into 129 2 times, leaving a remainder of 27.
Record the quotient 2 as the next digit in the result. 
Result so far: 152.0
If we take 102 away from 129, we end up with 27.
Include the next digit (6) from the dividend after 27, then repeat: 276 / 51

Advancing to step 5:
51 can be fit into 276 5 times, resulting in a remainder of 21.
Use 5 as the next digit of our solution. 
Result so far: 1525.0
Subtracting 255 from 276 leaves us with 21.
Grab the next digit (0) from the dividend, add it to 21, then carry on: 210 / 51

Let's proceed to step 6:
If we divide 210 by 51, we get 4 and a remainder of 6.
The number 4 becomes the next digit in our result. 
Result so far: 15254.0
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.

Advancing to step 7:
The number 51 fits into 60 1 times, leaving a remainder of 9.
Use 1 as the next digit of our solution. 
Result so far: 15254.1
Deduct 51 from 60 and we're left with 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

On to step 8:
If we divide 90 by 51, we get 1 and a remainder of 39.
The number 1 becomes the next digit in our result. 
Result so far: 15254.11
Deduct 51 from 90 and we're left with 39.
Since there are no more digits in the dividend, we add a zero to the remainder making it 390, and continue the process.

Our division results in 15254.11 with a remaining 0.039.