770830 divided by 91 
Let's see how many times 91 fits into 770830.

Going ahead to step 1:
When dividing 7 by 91, we get 0 with a remainder of 7.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 7 and we're left with 7.
Bring next digit (7) of the dividend behind the 7 and repeat the process: 77 / 91

Step 2:
91 can be fit into 77 0 times, resulting in a remainder of 77.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 77 after subtracting 0 from 77.
Append the next digit (0) from the dividend to 77 and continue with: 770 / 91

Advancing to step 3:
770 divided by 91 is 8 with a remainder of 42.
Use 8 as the next digit of our solution. 
Result so far: 8.0
Subtract 728 from 770 to get 42.
Fetch the next digit (8) from the dividend, attach it to 42 and continue: 428 / 91

On to step 4:
The number 91 fits into 428 4 times, leaving a remainder of 64.
Put 4 as the next digit of the answer. 
Result so far: 84.0
Deduct 364 from 428 and we're left with 64.
Fetch the next digit (3) from the dividend, attach it to 64 and continue: 643 / 91

Step 5:
The number 91 fits into 643 7 times, leaving a remainder of 6.
Put 7 as the next digit of the answer. 
Result so far: 847.0
Deduct 637 from 643 and we're left with 6.
Append the next digit (0) from the dividend to 6 and continue with: 60 / 91

Moving on to step 6:
The number 91 fits into 60 0 times, leaving a remainder of 60.
Put 0 as the next digit of the answer. 
Result so far: 8470.0
Deduct 0 from 60 and we're left with 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Step 7:
When dividing 600 by 91, we get 6 with a remainder of 54.
Write down 6 as next digit of the result. 
Result so far: 8470.6
Subtracting 546 from 600 leaves us with 54.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

Let's proceed to step 8:
If we divide 540 by 91, we get 5 and a remainder of 85.
Record the quotient 5 as the next digit in the result. 
Result so far: 8470.65
Deduct 455 from 540 and we're left with 85.
Since there are no more digits in the dividend, we add a zero to the remainder making it 850, and continue the process.

Going ahead to step 9:
If we divide 850 by 91, we get 9 and a remainder of 31.
Record the quotient 9 as the next digit in the result. 
Result so far: 8470.659
Deduct 819 from 850 and we're left with 31.
Since there are no more digits in the dividend, we add a zero to the remainder making it 310, and continue the process.

Moving on to step 10:
The number 91 fits into 310 3 times, leaving a remainder of 37.
The number 3 becomes the next digit in our result. 
Result so far: 8470.6593
If we subtract 273 from 310, we get 37.
Since there are no more digits in the dividend, we add a zero to the remainder making it 370, and continue the process.

Let's proceed to step 11:
If we divide 370 by 91, we get 4 and a remainder of 6.
Record the quotient 4 as the next digit in the result. 
Result so far: 8470.65934
Deduct 364 from 370 and we're left with 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 12:
60 divided by 91 is 0 with a remainder of 60.
The next digit of our result is 0. 
Result so far: 8470.65934
The remainder is 60 after subtracting 0 from 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Going ahead to step 13:
91 can be fit into 600 6 times, resulting in a remainder of 54.
Use 6 as the next digit of our solution. 
Result so far: 8470.6593406
If we subtract 546 from 600, we get 54.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

Going ahead to step 14:
91 can be fit into 540 5 times, resulting in a remainder of 85.
Put 5 as the next digit of the answer. 
Result so far: 8470.65934065
The remainder is 85 after subtracting 455 from 540.
Since there are no more digits in the dividend, we add a zero to the remainder making it 850, and continue the process.

In conclusion, the division gives 8470.65934065 with a balance of 8.5e-08.