72102 ÷ 2 
We want to figure out the number of times 72102 can be divided by 2.

Step 1:
2 can be fit into 7 3 times, resulting in a remainder of 1.
Put 3 as the next digit of the answer. 
Result so far: 3.0
Deduct 6 from 7 and we're left with 1.
Grab the next digit (2) from the dividend, add it to 1, then carry on: 12 / 2

Step 2:
12 divided by 2 is 6 with a remainder of 0.
Record the quotient 6 as the next digit in the result. 
Result so far: 36.0
If we subtract 12 from 12, we get 0.
Bring next digit (1) of the dividend behind the 0 and repeat the process: 1 / 2

Step 3:
2 can be fit into 1 0 times, resulting in a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 360.0
Subtract 0 from 1 to get 1.
Fetch the next digit (0) from the dividend, attach it to 1 and continue: 10 / 2

On to step 4:
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: 3605.0
If we take 10 away from 10, we end up with 0.
Fetch the next digit (2) from the dividend, attach it to 0 and continue: 2 / 2

Step 5:
2 goes into 2 1 times with a remainder of 0.
Use 1 as the next digit of our solution. 
Result so far: 36051.0
If we subtract 2 from 2, 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.

Step 6:
2 can be fit into 0 0 times, resulting in a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 36051.0
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 7:
2 goes into 0 0 times with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 36051.0
Subtract 0 from 0 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.

In conclusion, the division gives 36051.0 with a balance of 0.0.