990987 divided by 91 
We want to divide 990987 by 91.

Going ahead to step 1:
91 goes into 9 0 times with a remainder of 9.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 9 after subtracting 0 from 9.
Take the next digit (9) from the dividend and append it to 9, then repeat: 99 / 91

Step 2:
99 divided by 91 is 1 with a remainder of 8.
Put 1 as the next digit of the answer. 
Result so far: 1.0
If we take 91 away from 99, we end up with 8.
Grab the next digit (0) from the dividend, add it to 8, then carry on: 80 / 91

Moving on to step 3:
80 divided by 91 is 0 with a remainder of 80.
Write down 0 as next digit of the result. 
Result so far: 10.0
If we subtract 0 from 80, we get 80.
Take the next digit (9) from the dividend and append it to 80, then repeat: 809 / 91

Let's proceed to step 4:
91 goes into 809 8 times with a remainder of 81.
Put 8 as the next digit of the answer. 
Result so far: 108.0
Subtracting 728 from 809 leaves us with 81.
Append the next digit (8) from the dividend to 81 and continue with: 818 / 91

On to step 5:
91 goes into 818 8 times with a remainder of 90.
The number 8 becomes the next digit in our result. 
Result so far: 1088.0
Subtracting 728 from 818 leaves us with 90.
Append the next digit (7) from the dividend to 90 and continue with: 907 / 91

Moving on to step 6:
907 divided by 91 is 9 with a remainder of 88.
Use 9 as the next digit of our solution. 
Result so far: 10889.0
Subtracting 819 from 907 leaves us with 88.
Since there are no more digits in the dividend, we add a zero to the remainder making it 880, and continue the process.

Moving on to step 7:
91 goes into 880 9 times with a remainder of 61.
Use 9 as the next digit of our solution. 
Result so far: 10889.9
Subtracting 819 from 880 leaves us with 61.
Since there are no more digits in the dividend, we add a zero to the remainder making it 610, and continue the process.

Moving on to step 8:
When dividing 610 by 91, we get 6 with a remainder of 64.
The number 6 becomes the next digit in our result. 
Result so far: 10889.96
Subtracting 546 from 610 leaves us with 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Moving on to step 9:
The number 91 fits into 640 7 times, leaving a remainder of 3.
Record the quotient 7 as the next digit in the result. 
Result so far: 10889.967
Deduct 637 from 640 and we're left with 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Advancing to step 10:
91 goes into 30 0 times with a remainder of 30.
Use 0 as the next digit of our solution. 
Result so far: 10889.967
If we subtract 0 from 30, we get 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

On to step 11:
300 divided by 91 is 3 with a remainder of 27.
Use 3 as the next digit of our solution. 
Result so far: 10889.96703
Subtract 273 from 300 to get 27.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

Moving on to step 12:
270 divided by 91 is 2 with a remainder of 88.
The next digit of our result is 2. 
Result so far: 10889.967032
If we take 182 away from 270, we end up with 88.
Since there are no more digits in the dividend, we add a zero to the remainder making it 880, and continue the process.

Step 13:
When dividing 880 by 91, we get 9 with a remainder of 61.
Record the quotient 9 as the next digit in the result. 
Result so far: 10889.9670329
Subtracting 819 from 880 leaves us with 61.
Since there are no more digits in the dividend, we add a zero to the remainder making it 610, and continue the process.

Step 14:
91 can be fit into 610 6 times, resulting in a remainder of 64.
The next digit of our result is 6. 
Result so far: 10889.96703296
If we subtract 546 from 610, we get 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

The final outcome is 10889.96703296, with a leftover of 6.4e-08.