We're dividing 869253 by 2 
We're looking to find how many times 2 goes into 869253.

Advancing to step 1:
When dividing 8 by 2, we get 4 with a remainder of 0.
Record the quotient 4 as the next digit in the result. 
Result so far: 4.0
Subtract 8 from 8 to get 0.
Grab the next digit (6) from the dividend, add it to 0, then carry on: 6 / 2

Going ahead to step 2:
If we divide 6 by 2, we get 3 and a remainder of 0.
The number 3 becomes the next digit in our result. 
Result so far: 43.0
The remainder is 0 after subtracting 6 from 6.
Bring next digit (9) of the dividend behind the 0 and repeat the process: 9 / 2

On to step 3:
2 can be fit into 9 4 times, resulting in a remainder of 1.
Put 4 as the next digit of the answer. 
Result so far: 434.0
Subtract 8 from 9 to get 1.
Take the next digit (2) from the dividend and append it to 1, then repeat: 12 / 2

Advancing to step 4:
12 divided by 2 is 6 with a remainder of 0.
The number 6 becomes the next digit in our result. 
Result so far: 4346.0
If we take 12 away from 12, we end up with 0.
Fetch the next digit (5) from the dividend, attach it to 0 and continue: 5 / 2

On to step 5:
2 goes into 5 2 times with a remainder of 1.
Use 2 as the next digit of our solution. 
Result so far: 43462.0
Subtract 4 from 5 to get 1.
Append the next digit (3) from the dividend to 1 and continue with: 13 / 2

On to step 6:
If we divide 13 by 2, we get 6 and a remainder of 1.
Put 6 as the next digit of the answer. 
Result so far: 434626.0
Deduct 12 from 13 and we're left with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Step 7:
When dividing 10 by 2, we get 5 with a remainder of 0.
Write down 5 as next digit of the result. 
Result so far: 434626.5
Deduct 10 from 10 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Let's proceed to step 8:
The number 2 fits into 0 0 times, leaving a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 434626.5
Deduct 0 from 0 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Moving on to step 9:
When dividing 0 by 2, we get 0 with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 434626.5
Subtracting 0 from 0 leaves us with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The final outcome is 434626.5, with a leftover of 0.0.