We're dividing 64251 by 3 
We want to divide 64251 by 3.

Going ahead to step 1:
3 can be fit into 6 2 times, resulting in a remainder of 0.
Write down 2 as next digit of the result. 
Result so far: 2.0
If we subtract 6 from 6, we get 0.
Grab the next digit (4) from the dividend, add it to 0, then carry on: 4 / 3

Advancing to step 2:
3 goes into 4 1 times with a remainder of 1.
Use 1 as the next digit of our solution. 
Result so far: 21.0
If we take 3 away from 4, we end up with 1.
Take the next digit (2) from the dividend and append it to 1, then repeat: 12 / 3

Going ahead to step 3:
3 can be fit into 12 4 times, resulting in a remainder of 0.
Use 4 as the next digit of our solution. 
Result so far: 214.0
Subtract 12 from 12 to get 0.
Include the next digit (5) from the dividend after 0, then repeat: 5 / 3

Step 4:
3 can be fit into 5 1 times, resulting in a remainder of 2.
Put 1 as the next digit of the answer. 
Result so far: 2141.0
If we take 3 away from 5, we end up with 2.
Include the next digit (1) from the dividend after 2, then repeat: 21 / 3

Going ahead to step 5:
If we divide 21 by 3, we get 7 and a remainder of 0.
The next digit of our result is 7. 
Result so far: 21417.0
The remainder is 0 after subtracting 21 from 21.
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 6:
When dividing 0 by 3, we get 0 with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 21417.0
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.

Going ahead to step 7:
The number 3 fits into 0 0 times, leaving a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 21417.0
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.

Our division results in 21417.0 with a remaining 0.0.