86936 ÷ 90 
We're looking to find how many times 90 goes into 86936.

Moving on to step 1:
8 divided by 90 is 0 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.
Append the next digit (6) from the dividend to 8 and continue with: 86 / 90

Let's proceed to step 2:
90 goes into 86 0 times with a remainder of 86.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 86, we get 86.
Bring next digit (9) of the dividend behind the 86 and repeat the process: 869 / 90

On to step 3:
If we divide 869 by 90, we get 9 and a remainder of 59.
The next digit of our result is 9. 
Result so far: 9.0
Subtracting 810 from 869 leaves us with 59.
Bring next digit (3) of the dividend behind the 59 and repeat the process: 593 / 90

On to step 4:
90 goes into 593 6 times with a remainder of 53.
The number 6 becomes the next digit in our result. 
Result so far: 96.0
If we take 540 away from 593, we end up with 53.
Grab the next digit (6) from the dividend, add it to 53, then carry on: 536 / 90

Moving on to step 5:
If we divide 536 by 90, we get 5 and a remainder of 86.
Use 5 as the next digit of our solution. 
Result so far: 965.0
Subtract 450 from 536 to get 86.
Since there are no more digits in the dividend, we add a zero to the remainder making it 860, and continue the process.

On to step 6:
90 goes into 860 9 times with a remainder of 50.
Use 9 as the next digit of our solution. 
Result so far: 965.9
If we take 810 away from 860, we end up with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Let's proceed to step 7:
500 divided by 90 is 5 with a remainder of 50.
The number 5 becomes the next digit in our result. 
Result so far: 965.95
If we take 450 away from 500, we end up with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

On to step 8:
When dividing 500 by 90, we get 5 with a remainder of 50.
Write down 5 as next digit of the result. 
Result so far: 965.955
Subtracting 450 from 500 leaves us with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

The final outcome is 965.955, with a leftover of 0.005.