860915 ÷ 90 
Our goal is to divide 860915 by 90.

Let's proceed to step 1:
8 divided by 90 is 0 with a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 8, we get 8.
Append the next digit (6) from the dividend to 8 and continue with: 86 / 90

Moving on to step 2:
90 can be fit into 86 0 times, resulting in a remainder of 86.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 86, we get 86.
Grab the next digit (0) from the dividend, add it to 86, then carry on: 860 / 90

On to step 3:
90 can be fit into 860 9 times, resulting in a remainder of 50.
The number 9 becomes the next digit in our result. 
Result so far: 9.0
Subtract 810 from 860 to get 50.
Fetch the next digit (9) from the dividend, attach it to 50 and continue: 509 / 90

Let's proceed to step 4:
509 divided by 90 is 5 with a remainder of 59.
Put 5 as the next digit of the answer. 
Result so far: 95.0
If we subtract 450 from 509, we get 59.
Take the next digit (1) from the dividend and append it to 59, then repeat: 591 / 90

Step 5:
The number 90 fits into 591 6 times, leaving a remainder of 51.
The number 6 becomes the next digit in our result. 
Result so far: 956.0
If we take 540 away from 591, we end up with 51.
Include the next digit (5) from the dividend after 51, then repeat: 515 / 90

Step 6:
90 can be fit into 515 5 times, resulting in a remainder of 65.
Write down 5 as next digit of the result. 
Result so far: 9565.0
Deduct 450 from 515 and we're left with 65.
Since there are no more digits in the dividend, we add a zero to the remainder making it 650, and continue the process.

Step 7:
If we divide 650 by 90, we get 7 and a remainder of 20.
The number 7 becomes the next digit in our result. 
Result so far: 9565.7
The remainder is 20 after subtracting 630 from 650.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Let's proceed to step 8:
90 goes into 200 2 times with a remainder of 20.
Record the quotient 2 as the next digit in the result. 
Result so far: 9565.72
If we subtract 180 from 200, we get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

On to step 9:
The number 90 fits into 200 2 times, leaving a remainder of 20.
Record the quotient 2 as the next digit in the result. 
Result so far: 9565.722
The remainder is 20 after subtracting 180 from 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

After the division, we end up with 9565.722 and a remainder of 0.002.