870383 ÷ 91 
We want to figure out the number of times 870383 can be divided by 91.

Advancing to step 1:
91 goes into 8 0 times with a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 8 to get 8.
Bring next digit (7) of the dividend behind the 8 and repeat the process: 87 / 91

Advancing to step 2:
91 goes into 87 0 times with a remainder of 87.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 87 and we're left with 87.
Include the next digit (0) from the dividend after 87, then repeat: 870 / 91

Step 3:
If we divide 870 by 91, we get 9 and a remainder of 51.
The number 9 becomes the next digit in our result. 
Result so far: 9.0
If we take 819 away from 870, we end up with 51.
Bring next digit (3) of the dividend behind the 51 and repeat the process: 513 / 91

Moving on to step 4:
513 divided by 91 is 5 with a remainder of 58.
Write down 5 as next digit of the result. 
Result so far: 95.0
If we subtract 455 from 513, we get 58.
Bring next digit (8) of the dividend behind the 58 and repeat the process: 588 / 91

On to step 5:
If we divide 588 by 91, we get 6 and a remainder of 42.
Write down 6 as next digit of the result. 
Result so far: 956.0
If we take 546 away from 588, we end up with 42.
Take the next digit (3) from the dividend and append it to 42, then repeat: 423 / 91

Advancing to step 6:
423 divided by 91 is 4 with a remainder of 59.
Record the quotient 4 as the next digit in the result. 
Result so far: 9564.0
The remainder is 59 after subtracting 364 from 423.
Since there are no more digits in the dividend, we add a zero to the remainder making it 590, and continue the process.

Advancing to step 7:
91 can be fit into 590 6 times, resulting in a remainder of 44.
Put 6 as the next digit of the answer. 
Result so far: 9564.6
If we subtract 546 from 590, we get 44.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

On to step 8:
91 goes into 440 4 times with a remainder of 76.
Use 4 as the next digit of our solution. 
Result so far: 9564.64
Subtract 364 from 440 to get 76.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

Moving on to step 9:
760 divided by 91 is 8 with a remainder of 32.
The next digit of our result is 8. 
Result so far: 9564.648
Subtracting 728 from 760 leaves us with 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Moving on to step 10:
If we divide 320 by 91, we get 3 and a remainder of 47.
Put 3 as the next digit of the answer. 
Result so far: 9564.6483
Subtracting 273 from 320 leaves us with 47.
Since there are no more digits in the dividend, we add a zero to the remainder making it 470, and continue the process.

Advancing to step 11:
91 goes into 470 5 times with a remainder of 15.
Use 5 as the next digit of our solution. 
Result so far: 9564.64835
Deduct 455 from 470 and we're left with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

On to step 12:
91 goes into 150 1 times with a remainder of 59.
Record the quotient 1 as the next digit in the result. 
Result so far: 9564.648351
Deduct 91 from 150 and we're left with 59.
Since there are no more digits in the dividend, we add a zero to the remainder making it 590, and continue the process.

Advancing to step 13:
91 can be fit into 590 6 times, resulting in a remainder of 44.
The next digit of our result is 6. 
Result so far: 9564.6483516
If we subtract 546 from 590, we get 44.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

Step 14:
If we divide 440 by 91, we get 4 and a remainder of 76.
The next digit of our result is 4. 
Result so far: 9564.64835164
If we take 364 away from 440, we end up with 76.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

After the division, we end up with 9564.64835164 and a remainder of 7.6e-08.