We're dividing 91087735 by 31 
We're looking to find how many times 31 goes into 91087735.

Moving on to step 1:
The number 31 fits into 9 0 times, leaving a remainder of 9.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 9 and we're left with 9.
Take the next digit (1) from the dividend and append it to 9, then repeat: 91 / 31

Advancing to step 2:
31 can be fit into 91 2 times, resulting in a remainder of 29.
Write down 2 as next digit of the result. 
Result so far: 2.0
Subtracting 62 from 91 leaves us with 29.
Bring next digit (0) of the dividend behind the 29 and repeat the process: 290 / 31

Step 3:
31 goes into 290 9 times with a remainder of 11.
Put 9 as the next digit of the answer. 
Result so far: 29.0
Subtract 279 from 290 to get 11.
Take the next digit (8) from the dividend and append it to 11, then repeat: 118 / 31

Going ahead to step 4:
31 can be fit into 118 3 times, resulting in a remainder of 25.
Use 3 as the next digit of our solution. 
Result so far: 293.0
If we take 93 away from 118, we end up with 25.
Take the next digit (7) from the dividend and append it to 25, then repeat: 257 / 31

Let's proceed to step 5:
The number 31 fits into 257 8 times, leaving a remainder of 9.
The next digit of our result is 8. 
Result so far: 2938.0
If we take 248 away from 257, we end up with 9.
Include the next digit (7) from the dividend after 9, then repeat: 97 / 31

Moving on to step 6:
If we divide 97 by 31, we get 3 and a remainder of 4.
Write down 3 as next digit of the result. 
Result so far: 29383.0
Subtract 93 from 97 to get 4.
Fetch the next digit (3) from the dividend, attach it to 4 and continue: 43 / 31

Advancing to step 7:
31 goes into 43 1 times with a remainder of 12.
Put 1 as the next digit of the answer. 
Result so far: 293831.0
The remainder is 12 after subtracting 31 from 43.
Include the next digit (5) from the dividend after 12, then repeat: 125 / 31

Going ahead to step 8:
The number 31 fits into 125 4 times, leaving a remainder of 1.
Put 4 as the next digit of the answer. 
Result so far: 2938314.0
If we subtract 124 from 125, we get 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Going ahead to step 9:
31 goes into 10 0 times with a remainder of 10.
The number 0 becomes the next digit in our result. 
Result so far: 2938314.0
The remainder is 10 after subtracting 0 from 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Let's proceed to step 10:
When dividing 100 by 31, we get 3 with a remainder of 7.
The next digit of our result is 3. 
Result so far: 2938314.03
If we subtract 93 from 100, we get 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Advancing to step 11:
31 goes into 70 2 times with a remainder of 8.
Put 2 as the next digit of the answer. 
Result so far: 2938314.032
If we take 62 away from 70, we end up with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Let's proceed to step 12:
31 can be fit into 80 2 times, resulting in a remainder of 18.
Write down 2 as next digit of the result. 
Result so far: 2938314.0322
Subtract 62 from 80 to get 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

The final result is 2938314.0322 with a remainder of 0.00018.