We divide 878538 by 91
We want to figure out the number of times 878538 can be divided by 91.

Advancing to step 1:
8 divided by 91 is 0 with a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Grab the next digit (7) from the dividend, add it to 8, then carry on: 87 / 91

Step 2:
If we divide 87 by 91, we get 0 and a remainder of 87.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 87 leaves us with 87.
Fetch the next digit (8) from the dividend, attach it to 87 and continue: 878 / 91

Let's proceed to step 3:
878 divided by 91 is 9 with a remainder of 59.
Use 9 as the next digit of our solution. 
Result so far: 9.0
Deduct 819 from 878 and we're left with 59.
Bring next digit (5) of the dividend behind the 59 and repeat the process: 595 / 91

On to step 4:
595 divided by 91 is 6 with a remainder of 49.
The number 6 becomes the next digit in our result. 
Result so far: 96.0
Subtract 546 from 595 to get 49.
Include the next digit (3) from the dividend after 49, then repeat: 493 / 91

Moving on to step 5:
If we divide 493 by 91, we get 5 and a remainder of 38.
The next digit of our result is 5. 
Result so far: 965.0
If we subtract 455 from 493, we get 38.
Take the next digit (8) from the dividend and append it to 38, then repeat: 388 / 91

Advancing to step 6:
388 divided by 91 is 4 with a remainder of 24.
The number 4 becomes the next digit in our result. 
Result so far: 9654.0
Subtracting 364 from 388 leaves us with 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Moving on to step 7:
When dividing 240 by 91, we get 2 with a remainder of 58.
Write down 2 as next digit of the result. 
Result so far: 9654.2
If we take 182 away from 240, we end up with 58.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

Step 8:
If we divide 580 by 91, we get 6 and a remainder of 34.
Use 6 as the next digit of our solution. 
Result so far: 9654.26
Deduct 546 from 580 and we're left with 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Advancing to step 9:
91 can be fit into 340 3 times, resulting in a remainder of 67.
Put 3 as the next digit of the answer. 
Result so far: 9654.263
Subtracting 273 from 340 leaves us with 67.
Since there are no more digits in the dividend, we add a zero to the remainder making it 670, and continue the process.

Moving on to step 10:
If we divide 670 by 91, we get 7 and a remainder of 33.
Write down 7 as next digit of the result. 
Result so far: 9654.2637
Subtracting 637 from 670 leaves us with 33.
Since there are no more digits in the dividend, we add a zero to the remainder making it 330, and continue the process.

Step 11:
330 divided by 91 is 3 with a remainder of 57.
The next digit of our result is 3. 
Result so far: 9654.26373
If we take 273 away from 330, we end up with 57.
Since there are no more digits in the dividend, we add a zero to the remainder making it 570, and continue the process.

Let's proceed to step 12:
91 can be fit into 570 6 times, resulting in a remainder of 24.
Record the quotient 6 as the next digit in the result. 
Result so far: 9654.263736
If we subtract 546 from 570, we get 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Let's proceed to step 13:
When dividing 240 by 91, we get 2 with a remainder of 58.
Write down 2 as next digit of the result. 
Result so far: 9654.2637362
Subtract 182 from 240 to get 58.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

Advancing to step 14:
The number 91 fits into 580 6 times, leaving a remainder of 34.
The next digit of our result is 6. 
Result so far: 9654.26373626
Deduct 546 from 580 and we're left with 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

The final result is 9654.26373626 with a remainder of 3.4e-08.