We're dividing 39924288 by 489 
We want to figure out the number of times 39924288 can be divided by 489.

Moving on to step 1:
If we divide 3 by 489, we get 0 and a remainder of 3.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 3 leaves us with 3.
Fetch the next digit (9) from the dividend, attach it to 3 and continue: 39 / 489

Going ahead to step 2:
If we divide 39 by 489, we get 0 and 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.
Bring next digit (9) of the dividend behind the 39 and repeat the process: 399 / 489

Let's proceed to step 3:
If we divide 399 by 489, we get 0 and a remainder of 399.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 399 to get 399.
Fetch the next digit (2) from the dividend, attach it to 399 and continue: 3992 / 489

Moving on to step 4:
The number 489 fits into 3992 8 times, leaving a remainder of 80.
Record the quotient 8 as the next digit in the result. 
Result so far: 8.0
Subtracting 3912 from 3992 leaves us with 80.
Include the next digit (4) from the dividend after 80, then repeat: 804 / 489

Step 5:
489 can be fit into 804 1 times, resulting in a remainder of 315.
The number 1 becomes the next digit in our result. 
Result so far: 81.0
Subtracting 489 from 804 leaves us with 315.
Fetch the next digit (2) from the dividend, attach it to 315 and continue: 3152 / 489

On to step 6:
The number 489 fits into 3152 6 times, leaving a remainder of 218.
Put 6 as the next digit of the answer. 
Result so far: 816.0
If we take 2934 away from 3152, we end up with 218.
Take the next digit (8) from the dividend and append it to 218, then repeat: 2188 / 489

Let's proceed to step 7:
489 can be fit into 2188 4 times, resulting in a remainder of 232.
The number 4 becomes the next digit in our result. 
Result so far: 8164.0
Subtracting 1956 from 2188 leaves us with 232.
Take the next digit (8) from the dividend and append it to 232, then repeat: 2328 / 489

On to step 8:
2328 divided by 489 is 4 with a remainder of 372.
Put 4 as the next digit of the answer. 
Result so far: 81644.0
Subtracting 1956 from 2328 leaves us with 372.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3720, and continue the process.

Let's proceed to step 9:
3720 divided by 489 is 7 with a remainder of 297.
Use 7 as the next digit of our solution. 
Result so far: 81644.7
If we take 3423 away from 3720, we end up with 297.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2970, and continue the process.

Advancing to step 10:
If we divide 2970 by 489, we get 6 and a remainder of 36.
Use 6 as the next digit of our solution. 
Result so far: 81644.76
The remainder is 36 after subtracting 2934 from 2970.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

On to step 11:
489 goes into 360 0 times with a remainder of 360.
The number 0 becomes the next digit in our result. 
Result so far: 81644.76
If we take 0 away from 360, we end up with 360.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3600, and continue the process.

Advancing to step 12:
489 goes into 3600 7 times with a remainder of 177.
Use 7 as the next digit of our solution. 
Result so far: 81644.7607
The remainder is 177 after subtracting 3423 from 3600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1770, and continue the process.

Moving on to step 13:
When dividing 1770 by 489, we get 3 with a remainder of 303.
The next digit of our result is 3. 
Result so far: 81644.76073
The remainder is 303 after subtracting 1467 from 1770.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3030, and continue the process.

Going ahead to step 14:
If we divide 3030 by 489, we get 6 and a remainder of 96.
The next digit of our result is 6. 
Result so far: 81644.760736
Deduct 2934 from 3030 and we're left with 96.
Since there are no more digits in the dividend, we add a zero to the remainder making it 960, and continue the process.

Let's proceed to step 15:
When dividing 960 by 489, we get 1 with a remainder of 471.
Put 1 as the next digit of the answer. 
Result so far: 81644.7607361
If we subtract 489 from 960, we get 471.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4710, and continue the process.

On to step 16:
When dividing 4710 by 489, we get 9 with a remainder of 309.
Record the quotient 9 as the next digit in the result. 
Result so far: 81644.76073619
If we take 4401 away from 4710, we end up with 309.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3090, and continue the process.

The final outcome is 81644.76073619, with a leftover of 3.09e-07.