We're dividing 90870236 by 9 
We're looking to find how many times 9 goes into 90870236.

Step 1:
The number 9 fits into 9 1 times, leaving a remainder of 0.
The next digit of our result is 1. 
Result so far: 1.0
The remainder is 0 after subtracting 9 from 9.
Bring next digit (0) of the dividend behind the 0 and repeat the process: 0 / 9

Step 2:
0 divided by 9 is 0 with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 10.0
The remainder is 0 after subtracting 0 from 0.
Include the next digit (8) from the dividend after 0, then repeat: 8 / 9

Step 3:
8 divided by 9 is 0 with a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 100.0
If we subtract 0 from 8, we get 8.
Fetch the next digit (7) from the dividend, attach it to 8 and continue: 87 / 9

Advancing to step 4:
87 divided by 9 is 9 with a remainder of 6.
Write down 9 as next digit of the result. 
Result so far: 1009.0
Subtract 81 from 87 to get 6.
Take the next digit (0) from the dividend and append it to 6, then repeat: 60 / 9

On to step 5:
60 divided by 9 is 6 with a remainder of 6.
Record the quotient 6 as the next digit in the result. 
Result so far: 10096.0
If we take 54 away from 60, we end up with 6.
Bring next digit (2) of the dividend behind the 6 and repeat the process: 62 / 9

Advancing to step 6:
9 can be fit into 62 6 times, resulting in a remainder of 8.
Write down 6 as next digit of the result. 
Result so far: 100966.0
The remainder is 8 after subtracting 54 from 62.
Append the next digit (3) from the dividend to 8 and continue with: 83 / 9

Let's proceed to step 7:
9 can be fit into 83 9 times, resulting in a remainder of 2.
Use 9 as the next digit of our solution. 
Result so far: 1009669.0
The remainder is 2 after subtracting 81 from 83.
Fetch the next digit (6) from the dividend, attach it to 2 and continue: 26 / 9

On to step 8:
If we divide 26 by 9, we get 2 and a remainder of 8.
Put 2 as the next digit of the answer. 
Result so far: 10096692.0
Subtract 18 from 26 to get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

On to step 9:
9 goes into 80 8 times with a remainder of 8.
Put 8 as the next digit of the answer. 
Result so far: 10096692.8
If we take 72 away from 80, 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.

Advancing to step 10:
When dividing 80 by 9, we get 8 with a remainder of 8.
Put 8 as the next digit of the answer. 
Result so far: 10096692.88
If we take 72 away from 80, 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.

Our division results in 10096692.88 with a remaining 0.008.