251501 divided by 2 
We want to figure out the number of times 251501 can be divided by 2.

Let's proceed to step 1:
When dividing 2 by 2, we get 1 with a remainder of 0.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Subtract 2 from 2 to get 0.
Fetch the next digit (5) from the dividend, attach it to 0 and continue: 5 / 2

Moving on to step 2:
The number 2 fits into 5 2 times, leaving a remainder of 1.
Put 2 as the next digit of the answer. 
Result so far: 12.0
If we take 4 away from 5, we end up with 1.
Include the next digit (1) from the dividend after 1, then repeat: 11 / 2

On to step 3:
11 divided by 2 is 5 with a remainder of 1.
Record the quotient 5 as the next digit in the result. 
Result so far: 125.0
Subtract 10 from 11 to get 1.
Include the next digit (5) from the dividend after 1, then repeat: 15 / 2

Let's proceed to step 4:
If we divide 15 by 2, we get 7 and a remainder of 1.
The next digit of our result is 7. 
Result so far: 1257.0
The remainder is 1 after subtracting 14 from 15.
Take the next digit (0) from the dividend and append it to 1, then repeat: 10 / 2

On to step 5:
2 goes into 10 5 times with a remainder of 0.
Put 5 as the next digit of the answer. 
Result so far: 12575.0
If we subtract 10 from 10, we get 0.
Include the next digit (1) from the dividend after 0, then repeat: 1 / 2

Let's proceed to step 6:
When dividing 1 by 2, we get 0 with a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 125750.0
The remainder is 1 after subtracting 0 from 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Going ahead to step 7:
The number 2 fits into 10 5 times, leaving a remainder of 0.
The number 5 becomes the next digit in our result. 
Result so far: 125750.5
Subtract 10 from 10 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

On to step 8:
2 can be fit into 0 0 times, resulting in a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 125750.5
If we subtract 0 from 0, we get 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:
When dividing 0 by 2, we get 0 with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 125750.5
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.

Our division results in 125750.5 with a remaining 0.0.