We look at the division of 771800 by 15 
We're looking to find how many times 15 goes into 771800.

Advancing to step 1:
15 goes into 7 0 times with a remainder of 7.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 7 leaves us with 7.
Take the next digit (7) from the dividend and append it to 7, then repeat: 77 / 15

Advancing to step 2:
The number 15 fits into 77 5 times, leaving a remainder of 2.
Write down 5 as next digit of the result. 
Result so far: 5.0
Subtract 75 from 77 to get 2.
Include the next digit (1) from the dividend after 2, then repeat: 21 / 15

Step 3:
The number 15 fits into 21 1 times, leaving a remainder of 6.
Record the quotient 1 as the next digit in the result. 
Result so far: 51.0
If we take 15 away from 21, we end up with 6.
Take the next digit (8) from the dividend and append it to 6, then repeat: 68 / 15

Advancing to step 4:
The number 15 fits into 68 4 times, leaving a remainder of 8.
Record the quotient 4 as the next digit in the result. 
Result so far: 514.0
Subtract 60 from 68 to get 8.
Take the next digit (0) from the dividend and append it to 8, then repeat: 80 / 15

On to step 5:
15 can be fit into 80 5 times, resulting in a remainder of 5.
The next digit of our result is 5. 
Result so far: 5145.0
Subtracting 75 from 80 leaves us with 5.
Grab the next digit (0) from the dividend, add it to 5, then carry on: 50 / 15

On to step 6:
15 goes into 50 3 times with a remainder of 5.
Use 3 as the next digit of our solution. 
Result so far: 51453.0
If we subtract 45 from 50, we get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Moving on to step 7:
The number 15 fits into 50 3 times, leaving a remainder of 5.
Put 3 as the next digit of the answer. 
Result so far: 51453.3
If we take 45 away from 50, we end up 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.

On to step 8:
15 goes into 50 3 times with a remainder of 5.
Use 3 as the next digit of our solution. 
Result so far: 51453.33
The remainder is 5 after subtracting 45 from 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

The final outcome is 51453.33, with a leftover of 0.005.