Let's divide 39398789 by 100
We want to divide 39398789 by 100.

Going ahead to step 1:
100 goes into 3 0 times with a remainder of 3.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 3, we end up with 3.
Bring next digit (9) of the dividend behind the 3 and repeat the process: 39 / 100

Let's proceed to step 2:
100 goes into 39 0 times with a remainder of 39.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 39 after subtracting 0 from 39.
Grab the next digit (3) from the dividend, add it to 39, then carry on: 393 / 100

Let's proceed to step 3:
If we divide 393 by 100, we get 3 and a remainder of 93.
Record the quotient 3 as the next digit in the result. 
Result so far: 3.0
Deduct 300 from 393 and we're left with 93.
Include the next digit (9) from the dividend after 93, then repeat: 939 / 100

Step 4:
When dividing 939 by 100, we get 9 with a remainder of 39.
The number 9 becomes the next digit in our result. 
Result so far: 39.0
Deduct 900 from 939 and we're left with 39.
Take the next digit (8) from the dividend and append it to 39, then repeat: 398 / 100

Step 5:
398 divided by 100 is 3 with a remainder of 98.
Write down 3 as next digit of the result. 
Result so far: 393.0
The remainder is 98 after subtracting 300 from 398.
Append the next digit (7) from the dividend to 98 and continue with: 987 / 100

Moving on to step 6:
The number 100 fits into 987 9 times, leaving a remainder of 87.
Use 9 as the next digit of our solution. 
Result so far: 3939.0
The remainder is 87 after subtracting 900 from 987.
Append the next digit (8) from the dividend to 87 and continue with: 878 / 100

Let's proceed to step 7:
878 divided by 100 is 8 with a remainder of 78.
The next digit of our result is 8. 
Result so far: 39398.0
If we subtract 800 from 878, we get 78.
Fetch the next digit (9) from the dividend, attach it to 78 and continue: 789 / 100

On to step 8:
100 goes into 789 7 times with a remainder of 89.
Write down 7 as next digit of the result. 
Result so far: 393987.0
If we subtract 700 from 789, we get 89.
Since there are no more digits in the dividend, we add a zero to the remainder making it 890, and continue the process.

Moving on to step 9:
The number 100 fits into 890 8 times, leaving a remainder of 90.
Use 8 as the next digit of our solution. 
Result so far: 393987.8
Subtract 800 from 890 to get 90.
Since there are no more digits in the dividend, we add a zero to the remainder making it 900, and continue the process.

Step 10:
900 divided by 100 is 9 with a remainder of 0.
Record the quotient 9 as the next digit in the result. 
Result so far: 393987.89
If we take 900 away from 900, 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.

Step 11:
0 divided by 100 is 0 with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 393987.89
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.

On to step 12:
100 can be fit into 0 0 times, resulting in a remainder of 0.
The next digit of our result is 0. 
Result so far: 393987.89
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.

The final result is 393987.89 with a remainder of 0.0.