We look at the division of 8391267 by 773 
We're looking to find how many times 773 goes into 8391267.

On to step 1:
8 divided by 773 is 0 with a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Fetch the next digit (3) from the dividend, attach it to 8 and continue: 83 / 773

On to step 2:
83 divided by 773 is 0 with a remainder of 83.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 83 and we're left with 83.
Include the next digit (9) from the dividend after 83, then repeat: 839 / 773

Going ahead to step 3:
If we divide 839 by 773, we get 1 and a remainder of 66.
Write down 1 as next digit of the result. 
Result so far: 1.0
If we take 773 away from 839, we end up with 66.
Append the next digit (1) from the dividend to 66 and continue with: 661 / 773

Moving on to step 4:
773 can be fit into 661 0 times, resulting in a remainder of 661.
Put 0 as the next digit of the answer. 
Result so far: 10.0
If we take 0 away from 661, we end up with 661.
Take the next digit (2) from the dividend and append it to 661, then repeat: 6612 / 773

Advancing to step 5:
When dividing 6612 by 773, we get 8 with a remainder of 428.
Write down 8 as next digit of the result. 
Result so far: 108.0
If we subtract 6184 from 6612, we get 428.
Append the next digit (6) from the dividend to 428 and continue with: 4286 / 773

Advancing to step 6:
4286 divided by 773 is 5 with a remainder of 421.
The number 5 becomes the next digit in our result. 
Result so far: 1085.0
Subtract 3865 from 4286 to get 421.
Fetch the next digit (7) from the dividend, attach it to 421 and continue: 4217 / 773

Moving on to step 7:
If we divide 4217 by 773, we get 5 and a remainder of 352.
The number 5 becomes the next digit in our result. 
Result so far: 10855.0
If we take 3865 away from 4217, we end up with 352.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3520, and continue the process.

Advancing to step 8:
When dividing 3520 by 773, we get 4 with a remainder of 428.
Record the quotient 4 as the next digit in the result. 
Result so far: 10855.4
The remainder is 428 after subtracting 3092 from 3520.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4280, and continue the process.

Let's proceed to step 9:
The number 773 fits into 4280 5 times, leaving a remainder of 415.
Write down 5 as next digit of the result. 
Result so far: 10855.45
Subtracting 3865 from 4280 leaves us with 415.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4150, and continue the process.

Let's proceed to step 10:
When dividing 4150 by 773, we get 5 with a remainder of 285.
Put 5 as the next digit of the answer. 
Result so far: 10855.455
Subtracting 3865 from 4150 leaves us with 285.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2850, and continue the process.

Our division results in 10855.455 with a remaining 0.0285.