We look at the division of 39975399 by 2 
We're looking to find how many times 2 goes into 39975399.

Let's proceed to step 1:
The number 2 fits into 3 1 times, leaving a remainder of 1.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Deduct 2 from 3 and we're left with 1.
Fetch the next digit (9) from the dividend, attach it to 1 and continue: 19 / 2

Let's proceed to step 2:
2 goes into 19 9 times with a remainder of 1.
Use 9 as the next digit of our solution. 
Result so far: 19.0
Deduct 18 from 19 and we're left with 1.
Include the next digit (9) from the dividend after 1, then repeat: 19 / 2

Step 3:
When dividing 19 by 2, we get 9 with a remainder of 1.
Record the quotient 9 as the next digit in the result. 
Result so far: 199.0
If we subtract 18 from 19, we get 1.
Take the next digit (7) from the dividend and append it to 1, then repeat: 17 / 2

Advancing to step 4:
The number 2 fits into 17 8 times, leaving a remainder of 1.
Write down 8 as next digit of the result. 
Result so far: 1998.0
The remainder is 1 after subtracting 16 from 17.
Take the next digit (5) from the dividend and append it to 1, then repeat: 15 / 2

Advancing to step 5:
15 divided by 2 is 7 with a remainder of 1.
The number 7 becomes the next digit in our result. 
Result so far: 19987.0
Subtract 14 from 15 to get 1.
Append the next digit (3) from the dividend to 1 and continue with: 13 / 2

Moving on to step 6:
2 can be fit into 13 6 times, resulting in a remainder of 1.
Put 6 as the next digit of the answer. 
Result so far: 199876.0
If we take 12 away from 13, we end up with 1.
Append the next digit (9) from the dividend to 1 and continue with: 19 / 2

Going ahead to step 7:
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: 1998769.0
If we take 18 away from 19, we end up with 1.
Grab the next digit (9) from the dividend, add it to 1, then carry on: 19 / 2

Step 8:
When dividing 19 by 2, we get 9 with a remainder of 1.
Put 9 as the next digit of the answer. 
Result so far: 19987699.0
Subtract 18 from 19 to get 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Moving on to step 9:
2 goes into 10 5 times with a remainder of 0.
Use 5 as the next digit of our solution. 
Result so far: 19987699.5
If we subtract 10 from 10, 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.

Moving on to step 10:
2 goes into 0 0 times with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 19987699.5
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.

Going ahead to step 11:
2 goes into 0 0 times with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 19987699.5
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.

The quotient of the division is 19987699.5, and the remainder is 0.0.