39953 ÷ 45 
We want to figure out the number of times 39953 can be divided by 45.

Advancing to step 1:
45 goes into 3 0 times with a remainder of 3.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 3, we get 3.
Include the next digit (9) from the dividend after 3, then repeat: 39 / 45

Step 2:
The number 45 fits into 39 0 times, leaving a remainder of 39.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 39, we get 39.
Bring next digit (9) of the dividend behind the 39 and repeat the process: 399 / 45

Let's proceed to step 3:
45 goes into 399 8 times with a remainder of 39.
Use 8 as the next digit of our solution. 
Result so far: 8.0
Subtracting 360 from 399 leaves us with 39.
Grab the next digit (5) from the dividend, add it to 39, then carry on: 395 / 45

Advancing to step 4:
45 goes into 395 8 times with a remainder of 35.
The next digit of our result is 8. 
Result so far: 88.0
The remainder is 35 after subtracting 360 from 395.
Include the next digit (3) from the dividend after 35, then repeat: 353 / 45

Moving on to step 5:
If we divide 353 by 45, we get 7 and a remainder of 38.
The next digit of our result is 7. 
Result so far: 887.0
If we subtract 315 from 353, we get 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Step 6:
45 can be fit into 380 8 times, resulting in a remainder of 20.
Write down 8 as next digit of the result. 
Result so far: 887.8
Deduct 360 from 380 and we're left with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Advancing to step 7:
If we divide 200 by 45, we get 4 and a remainder of 20.
Put 4 as the next digit of the answer. 
Result so far: 887.84
Subtract 180 from 200 to get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

On to step 8:
45 can be fit into 200 4 times, resulting in a remainder of 20.
The next digit of our result is 4. 
Result so far: 887.844
The remainder is 20 after subtracting 180 from 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

The final result is 887.844 with a remainder of 0.002.