We're dividing 81949136 by 2 
We want to figure out the number of times 81949136 can be divided by 2.

On to step 1:
2 can be fit into 8 4 times, resulting in a remainder of 0.
Record the quotient 4 as the next digit in the result. 
Result so far: 4.0
Deduct 8 from 8 and we're left with 0.
Include the next digit (1) from the dividend after 0, then repeat: 1 / 2

Advancing to step 2:
When dividing 1 by 2, we get 0 with a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 40.0
The remainder is 1 after subtracting 0 from 1.
Bring next digit (9) of the dividend behind the 1 and repeat the process: 19 / 2

Advancing to step 3:
If we divide 19 by 2, we get 9 and a remainder of 1.
Put 9 as the next digit of the answer. 
Result so far: 409.0
The remainder is 1 after subtracting 18 from 19.
Grab the next digit (4) from the dividend, add it to 1, then carry on: 14 / 2

Let's proceed to step 4:
The number 2 fits into 14 7 times, leaving a remainder of 0.
The next digit of our result is 7. 
Result so far: 4097.0
The remainder is 0 after subtracting 14 from 14.
Append the next digit (9) from the dividend to 0 and continue with: 9 / 2

Moving on to step 5:
When dividing 9 by 2, we get 4 with a remainder of 1.
Write down 4 as next digit of the result. 
Result so far: 40974.0
Subtract 8 from 9 to get 1.
Fetch the next digit (1) from the dividend, attach it to 1 and continue: 11 / 2

Let's proceed to step 6:
If we divide 11 by 2, we get 5 and a remainder of 1.
Put 5 as the next digit of the answer. 
Result so far: 409745.0
The remainder is 1 after subtracting 10 from 11.
Bring next digit (3) of the dividend behind the 1 and repeat the process: 13 / 2

Step 7:
The number 2 fits into 13 6 times, leaving a remainder of 1.
Use 6 as the next digit of our solution. 
Result so far: 4097456.0
Deduct 12 from 13 and we're left with 1.
Take the next digit (6) from the dividend and append it to 1, then repeat: 16 / 2

Going ahead to step 8:
16 divided by 2 is 8 with a remainder of 0.
Put 8 as the next digit of the answer. 
Result so far: 40974568.0
Subtracting 16 from 16 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.

Let's proceed to step 9:
2 goes into 0 0 times with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 40974568.0
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.

Going ahead to step 10:
2 can be fit into 0 0 times, resulting in a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 40974568.0
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 40974568.0 with a remaining 0.0.