We're dividing 864213 by 25 
We want to figure out the number of times 864213 can be divided by 25.

Advancing to step 1:
8 divided by 25 is 0 with a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Bring next digit (6) of the dividend behind the 8 and repeat the process: 86 / 25

On to step 2:
25 can be fit into 86 3 times, resulting in a remainder of 11.
Put 3 as the next digit of the answer. 
Result so far: 3.0
Subtracting 75 from 86 leaves us with 11.
Append the next digit (4) from the dividend to 11 and continue with: 114 / 25

Step 3:
The number 25 fits into 114 4 times, leaving a remainder of 14.
The number 4 becomes the next digit in our result. 
Result so far: 34.0
If we subtract 100 from 114, we get 14.
Bring next digit (2) of the dividend behind the 14 and repeat the process: 142 / 25

Advancing to step 4:
The number 25 fits into 142 5 times, leaving a remainder of 17.
The number 5 becomes the next digit in our result. 
Result so far: 345.0
Deduct 125 from 142 and we're left with 17.
Take the next digit (1) from the dividend and append it to 17, then repeat: 171 / 25

Let's proceed to step 5:
171 divided by 25 is 6 with a remainder of 21.
Write down 6 as next digit of the result. 
Result so far: 3456.0
Subtract 150 from 171 to get 21.
Bring next digit (3) of the dividend behind the 21 and repeat the process: 213 / 25

Advancing to step 6:
213 divided by 25 is 8 with a remainder of 13.
Put 8 as the next digit of the answer. 
Result so far: 34568.0
Subtract 200 from 213 to get 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Advancing to step 7:
When dividing 130 by 25, we get 5 with a remainder of 5.
Record the quotient 5 as the next digit in the result. 
Result so far: 34568.5
Deduct 125 from 130 and we're left with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Step 8:
The number 25 fits into 50 2 times, leaving a remainder of 0.
Put 2 as the next digit of the answer. 
Result so far: 34568.52
Deduct 50 from 50 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.

Advancing to step 9:
25 goes into 0 0 times with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 34568.52
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.

Let's proceed to step 10:
When dividing 0 by 25, we get 0 with a remainder of 0.
The next digit of our result is 0. 
Result so far: 34568.52
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.

The quotient of the division is 34568.52, and the remainder is 0.0.