We divide 91390145 by 991
We want to divide 91390145 by 991.

Step 1:
991 goes into 9 0 times with a remainder of 9.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 9 to get 9.
Append the next digit (1) from the dividend to 9 and continue with: 91 / 991

Advancing to step 2:
If we divide 91 by 991, we get 0 and a remainder of 91.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 91 after subtracting 0 from 91.
Take the next digit (3) from the dividend and append it to 91, then repeat: 913 / 991

Moving on to step 3:
913 divided by 991 is 0 with a remainder of 913.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 913 leaves us with 913.
Append the next digit (9) from the dividend to 913 and continue with: 9139 / 991

Moving on to step 4:
991 can be fit into 9139 9 times, resulting in a remainder of 220.
The next digit of our result is 9. 
Result so far: 9.0
Deduct 8919 from 9139 and we're left with 220.
Append the next digit (0) from the dividend to 220 and continue with: 2200 / 991

On to step 5:
991 can be fit into 2200 2 times, resulting in a remainder of 218.
The next digit of our result is 2. 
Result so far: 92.0
Subtract 1982 from 2200 to get 218.
Include the next digit (1) from the dividend after 218, then repeat: 2181 / 991

Let's proceed to step 6:
When dividing 2181 by 991, we get 2 with a remainder of 199.
Write down 2 as next digit of the result. 
Result so far: 922.0
Deduct 1982 from 2181 and we're left with 199.
Fetch the next digit (4) from the dividend, attach it to 199 and continue: 1994 / 991

On to step 7:
991 goes into 1994 2 times with a remainder of 12.
Put 2 as the next digit of the answer. 
Result so far: 9222.0
Subtracting 1982 from 1994 leaves us with 12.
Include the next digit (5) from the dividend after 12, then repeat: 125 / 991

Step 8:
991 goes into 125 0 times with a remainder of 125.
Record the quotient 0 as the next digit in the result. 
Result so far: 92220.0
Deduct 0 from 125 and we're left with 125.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1250, and continue the process.

Step 9:
991 goes into 1250 1 times with a remainder of 259.
The next digit of our result is 1. 
Result so far: 92220.1
If we take 991 away from 1250, we end up with 259.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2590, and continue the process.

Moving on to step 10:
991 goes into 2590 2 times with a remainder of 608.
Put 2 as the next digit of the answer. 
Result so far: 92220.12
The remainder is 608 after subtracting 1982 from 2590.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6080, and continue the process.

On to step 11:
6080 divided by 991 is 6 with a remainder of 134.
Put 6 as the next digit of the answer. 
Result so far: 92220.126
Subtract 5946 from 6080 to get 134.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1340, and continue the process.

Going ahead to step 12:
When dividing 1340 by 991, we get 1 with a remainder of 349.
The number 1 becomes the next digit in our result. 
Result so far: 92220.1261
If we subtract 991 from 1340, we get 349.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3490, and continue the process.

On to step 13:
991 goes into 3490 3 times with a remainder of 517.
The next digit of our result is 3. 
Result so far: 92220.12613
Subtract 2973 from 3490 to get 517.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5170, and continue the process.

Step 14:
When dividing 5170 by 991, we get 5 with a remainder of 215.
The next digit of our result is 5. 
Result so far: 92220.126135
Subtracting 4955 from 5170 leaves us with 215.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2150, and continue the process.

Advancing to step 15:
If we divide 2150 by 991, we get 2 and a remainder of 168.
The next digit of our result is 2. 
Result so far: 92220.1261352
If we subtract 1982 from 2150, we get 168.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1680, and continue the process.

Moving on to step 16:
When dividing 1680 by 991, we get 1 with a remainder of 689.
Record the quotient 1 as the next digit in the result. 
Result so far: 92220.12613521
Subtract 991 from 1680 to get 689.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6890, and continue the process.

The quotient of the division is 92220.12613521, and the remainder is 6.89e-07.