781286 divided by 91 
We want to figure out the number of times 781286 can be divided by 91.

Step 1:
If we divide 7 by 91, we get 0 and a remainder of 7.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 7 to get 7.
Append the next digit (8) from the dividend to 7 and continue with: 78 / 91

Let's proceed to step 2:
91 can be fit into 78 0 times, resulting in a remainder of 78.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 78, we end up with 78.
Append the next digit (1) from the dividend to 78 and continue with: 781 / 91

Advancing to step 3:
91 goes into 781 8 times with a remainder of 53.
The number 8 becomes the next digit in our result. 
Result so far: 8.0
Subtracting 728 from 781 leaves us with 53.
Take the next digit (2) from the dividend and append it to 53, then repeat: 532 / 91

Going ahead to step 4:
The number 91 fits into 532 5 times, leaving a remainder of 77.
Put 5 as the next digit of the answer. 
Result so far: 85.0
If we take 455 away from 532, we end up with 77.
Append the next digit (8) from the dividend to 77 and continue with: 778 / 91

Step 5:
If we divide 778 by 91, we get 8 and a remainder of 50.
Put 8 as the next digit of the answer. 
Result so far: 858.0
If we take 728 away from 778, we end up with 50.
Grab the next digit (6) from the dividend, add it to 50, then carry on: 506 / 91

Let's proceed to step 6:
91 goes into 506 5 times with a remainder of 51.
Write down 5 as next digit of the result. 
Result so far: 8585.0
If we take 455 away from 506, we end up with 51.
Since there are no more digits in the dividend, we add a zero to the remainder making it 510, and continue the process.

Let's proceed to step 7:
The number 91 fits into 510 5 times, leaving a remainder of 55.
Record the quotient 5 as the next digit in the result. 
Result so far: 8585.5
If we subtract 455 from 510, we get 55.
Since there are no more digits in the dividend, we add a zero to the remainder making it 550, and continue the process.

On to step 8:
The number 91 fits into 550 6 times, leaving a remainder of 4.
Record the quotient 6 as the next digit in the result. 
Result so far: 8585.56
If we subtract 546 from 550, we get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Let's proceed to step 9:
91 can be fit into 40 0 times, resulting in a remainder of 40.
Use 0 as the next digit of our solution. 
Result so far: 8585.56
The remainder is 40 after subtracting 0 from 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Let's proceed to step 10:
When dividing 400 by 91, we get 4 with a remainder of 36.
Put 4 as the next digit of the answer. 
Result so far: 8585.5604
Subtracting 364 from 400 leaves us with 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Step 11:
360 divided by 91 is 3 with a remainder of 87.
Put 3 as the next digit of the answer. 
Result so far: 8585.56043
If we take 273 away from 360, we end up with 87.
Since there are no more digits in the dividend, we add a zero to the remainder making it 870, and continue the process.

Advancing to step 12:
When dividing 870 by 91, we get 9 with a remainder of 51.
Put 9 as the next digit of the answer. 
Result so far: 8585.560439
If we subtract 819 from 870, we get 51.
Since there are no more digits in the dividend, we add a zero to the remainder making it 510, and continue the process.

Advancing to step 13:
The number 91 fits into 510 5 times, leaving a remainder of 55.
Use 5 as the next digit of our solution. 
Result so far: 8585.5604395
Deduct 455 from 510 and we're left with 55.
Since there are no more digits in the dividend, we add a zero to the remainder making it 550, and continue the process.

Moving on to step 14:
91 goes into 550 6 times with a remainder of 4.
Write down 6 as next digit of the result. 
Result so far: 8585.56043956
If we take 546 away from 550, we end up with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

In conclusion, the division gives 8585.56043956 with a balance of 4e-09.