16039 divided by 45 
We want to figure out the number of times 16039 can be divided by 45.

Moving on to step 1:
When dividing 1 by 45, we get 0 with a remainder of 1.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 1 leaves us with 1.
Include the next digit (6) from the dividend after 1, then repeat: 16 / 45

Going ahead to step 2:
If we divide 16 by 45, we get 0 and a remainder of 16.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 16 after subtracting 0 from 16.
Append the next digit (0) from the dividend to 16 and continue with: 160 / 45

Going ahead to step 3:
If we divide 160 by 45, we get 3 and a remainder of 25.
Record the quotient 3 as the next digit in the result. 
Result so far: 3.0
The remainder is 25 after subtracting 135 from 160.
Bring next digit (3) of the dividend behind the 25 and repeat the process: 253 / 45

Let's proceed to step 4:
When dividing 253 by 45, we get 5 with a remainder of 28.
Put 5 as the next digit of the answer. 
Result so far: 35.0
If we take 225 away from 253, we end up with 28.
Grab the next digit (9) from the dividend, add it to 28, then carry on: 289 / 45

Advancing to step 5:
The number 45 fits into 289 6 times, leaving a remainder of 19.
Use 6 as the next digit of our solution. 
Result so far: 356.0
Subtracting 270 from 289 leaves us with 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Step 6:
190 divided by 45 is 4 with a remainder of 10.
The number 4 becomes the next digit in our result. 
Result so far: 356.4
The remainder is 10 after subtracting 180 from 190.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

On to step 7:
45 can be fit into 100 2 times, resulting in a remainder of 10.
Put 2 as the next digit of the answer. 
Result so far: 356.42
If we subtract 90 from 100, we get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Advancing to step 8:
45 can be fit into 100 2 times, resulting in a remainder of 10.
The number 2 becomes the next digit in our result. 
Result so far: 356.422
Deduct 90 from 100 and we're left with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

The final result is 356.422 with a remainder of 0.001.