645258 ÷ 10 
We want to figure out the number of times 645258 can be divided by 10.

Let's proceed to step 1:
10 can be fit into 6 0 times, resulting in a remainder of 6.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Bring next digit (4) of the dividend behind the 6 and repeat the process: 64 / 10

On to step 2:
10 can be fit into 64 6 times, resulting in a remainder of 4.
Put 6 as the next digit of the answer. 
Result so far: 6.0
The remainder is 4 after subtracting 60 from 64.
Include the next digit (5) from the dividend after 4, then repeat: 45 / 10

Advancing to step 3:
10 goes into 45 4 times with a remainder of 5.
Record the quotient 4 as the next digit in the result. 
Result so far: 64.0
Deduct 40 from 45 and we're left with 5.
Bring next digit (2) of the dividend behind the 5 and repeat the process: 52 / 10

Let's proceed to step 4:
52 divided by 10 is 5 with a remainder of 2.
The next digit of our result is 5. 
Result so far: 645.0
If we subtract 50 from 52, we get 2.
Bring next digit (5) of the dividend behind the 2 and repeat the process: 25 / 10

Advancing to step 5:
The number 10 fits into 25 2 times, leaving a remainder of 5.
Use 2 as the next digit of our solution. 
Result so far: 6452.0
Subtracting 20 from 25 leaves us with 5.
Append the next digit (8) from the dividend to 5 and continue with: 58 / 10

Advancing to step 6:
10 can be fit into 58 5 times, resulting in a remainder of 8.
Use 5 as the next digit of our solution. 
Result so far: 64525.0
If we subtract 50 from 58, we get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Going ahead to step 7:
80 divided by 10 is 8 with a remainder of 0.
Put 8 as the next digit of the answer. 
Result so far: 64525.8
The remainder is 0 after subtracting 80 from 80.
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 8:
10 goes into 0 0 times with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 64525.8
The remainder is 0 after subtracting 0 from 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 9:
When dividing 0 by 10, we get 0 with a remainder of 0.
The next digit of our result is 0. 
Result so far: 64525.8
If we take 0 away from 0, we end up 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 64525.8, and the remainder is 0.0.