We're dividing 864539 by 45 
Our goal is to divide 864539 by 45.

On to step 1:
If we divide 8 by 45, we get 0 and a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 8 after subtracting 0 from 8.
Fetch the next digit (6) from the dividend, attach it to 8 and continue: 86 / 45

Step 2:
45 can be fit into 86 1 times, resulting in a remainder of 41.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Subtract 45 from 86 to get 41.
Take the next digit (4) from the dividend and append it to 41, then repeat: 414 / 45

Going ahead to step 3:
45 goes into 414 9 times with a remainder of 9.
Write down 9 as next digit of the result. 
Result so far: 19.0
Deduct 405 from 414 and we're left with 9.
Append the next digit (5) from the dividend to 9 and continue with: 95 / 45

Step 4:
45 goes into 95 2 times with a remainder of 5.
The number 2 becomes the next digit in our result. 
Result so far: 192.0
Deduct 90 from 95 and we're left with 5.
Take the next digit (3) from the dividend and append it to 5, then repeat: 53 / 45

Step 5:
The number 45 fits into 53 1 times, leaving a remainder of 8.
The number 1 becomes the next digit in our result. 
Result so far: 1921.0
The remainder is 8 after subtracting 45 from 53.
Grab the next digit (9) from the dividend, add it to 8, then carry on: 89 / 45

Advancing to step 6:
The number 45 fits into 89 1 times, leaving a remainder of 44.
Record the quotient 1 as the next digit in the result. 
Result so far: 19211.0
Subtract 45 from 89 to get 44.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

Let's proceed to step 7:
45 can be fit into 440 9 times, resulting in a remainder of 35.
The next digit of our result is 9. 
Result so far: 19211.9
If we take 405 away from 440, we end up with 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Moving on to step 8:
45 goes into 350 7 times with a remainder of 35.
Write down 7 as next digit of the result. 
Result so far: 19211.97
Subtract 315 from 350 to get 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Let's proceed to step 9:
When dividing 350 by 45, we get 7 with a remainder of 35.
Put 7 as the next digit of the answer. 
Result so far: 19211.977
If we take 315 away from 350, we end up with 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

After the division, we end up with 19211.977 and a remainder of 0.0035.