We divide 39702144 by 2
We want to figure out the number of times 39702144 can be divided by 2.

On to step 1:
When dividing 3 by 2, we get 1 with a remainder of 1.
Write down 1 as next digit of the result. 
Result so far: 1.0
If we take 2 away from 3, we end up with 1.
Bring next digit (9) of the dividend behind the 1 and repeat the process: 19 / 2

On to step 2:
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: 19.0
Subtracting 18 from 19 leaves us with 1.
Grab the next digit (7) from the dividend, add it to 1, then carry on: 17 / 2

Moving on to step 3:
If we divide 17 by 2, we get 8 and a remainder of 1.
The number 8 becomes the next digit in our result. 
Result so far: 198.0
Subtract 16 from 17 to get 1.
Append the next digit (0) from the dividend to 1 and continue with: 10 / 2

Advancing to step 4:
2 goes into 10 5 times with a remainder of 0.
The number 5 becomes the next digit in our result. 
Result so far: 1985.0
If we subtract 10 from 10, we get 0.
Grab the next digit (2) from the dividend, add it to 0, then carry on: 2 / 2

Let's proceed to step 5:
The number 2 fits into 2 1 times, leaving a remainder of 0.
The number 1 becomes the next digit in our result. 
Result so far: 19851.0
Deduct 2 from 2 and we're left with 0.
Fetch the next digit (1) from the dividend, attach it to 0 and continue: 1 / 2

Step 6:
2 can be fit into 1 0 times, resulting in a remainder of 1.
Record the quotient 0 as the next digit in the result. 
Result so far: 198510.0
Subtract 0 from 1 to get 1.
Bring next digit (4) of the dividend behind the 1 and repeat the process: 14 / 2

Advancing to step 7:
14 divided by 2 is 7 with a remainder of 0.
Use 7 as the next digit of our solution. 
Result so far: 1985107.0
The remainder is 0 after subtracting 14 from 14.
Take the next digit (4) from the dividend and append it to 0, then repeat: 4 / 2

Advancing to step 8:
If we divide 4 by 2, we get 2 and a remainder of 0.
Write down 2 as next digit of the result. 
Result so far: 19851072.0
If we subtract 4 from 4, 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 9:
2 goes into 0 0 times with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 19851072.0
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.

Moving on to step 10:
When dividing 0 by 2, we get 0 with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 19851072.0
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.

After the division, we end up with 19851072.0 and a remainder of 0.0.