39639940 ÷ 457 
We want to figure out the number of times 39639940 can be divided by 457.

Moving on to step 1:
457 can be fit into 3 0 times, resulting in a remainder of 3.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 3 after subtracting 0 from 3.
Grab the next digit (9) from the dividend, add it to 3, then carry on: 39 / 457

Let's proceed to step 2:
If we divide 39 by 457, we get 0 and a remainder of 39.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 39 and we're left with 39.
Grab the next digit (6) from the dividend, add it to 39, then carry on: 396 / 457

Let's proceed to step 3:
The number 457 fits into 396 0 times, leaving a remainder of 396.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 396 after subtracting 0 from 396.
Bring next digit (3) of the dividend behind the 396 and repeat the process: 3963 / 457

Going ahead to step 4:
The number 457 fits into 3963 8 times, leaving a remainder of 307.
The next digit of our result is 8. 
Result so far: 8.0
If we take 3656 away from 3963, we end up with 307.
Grab the next digit (9) from the dividend, add it to 307, then carry on: 3079 / 457

On to step 5:
If we divide 3079 by 457, we get 6 and a remainder of 337.
Use 6 as the next digit of our solution. 
Result so far: 86.0
Subtracting 2742 from 3079 leaves us with 337.
Include the next digit (9) from the dividend after 337, then repeat: 3379 / 457

On to step 6:
If we divide 3379 by 457, we get 7 and a remainder of 180.
The number 7 becomes the next digit in our result. 
Result so far: 867.0
Subtract 3199 from 3379 to get 180.
Append the next digit (4) from the dividend to 180 and continue with: 1804 / 457

On to step 7:
If we divide 1804 by 457, we get 3 and a remainder of 433.
Write down 3 as next digit of the result. 
Result so far: 8673.0
Subtract 1371 from 1804 to get 433.
Take the next digit (0) from the dividend and append it to 433, then repeat: 4330 / 457

Moving on to step 8:
457 can be fit into 4330 9 times, resulting in a remainder of 217.
The number 9 becomes the next digit in our result. 
Result so far: 86739.0
If we take 4113 away from 4330, we end up with 217.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2170, and continue the process.

On to step 9:
457 goes into 2170 4 times with a remainder of 342.
Record the quotient 4 as the next digit in the result. 
Result so far: 86739.4
The remainder is 342 after subtracting 1828 from 2170.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3420, and continue the process.

On to step 10:
If we divide 3420 by 457, we get 7 and a remainder of 221.
Write down 7 as next digit of the result. 
Result so far: 86739.47
If we subtract 3199 from 3420, we get 221.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2210, and continue the process.

Step 11:
457 can be fit into 2210 4 times, resulting in a remainder of 382.
The number 4 becomes the next digit in our result. 
Result so far: 86739.474
Subtracting 1828 from 2210 leaves us with 382.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3820, and continue the process.

Moving on to step 12:
3820 divided by 457 is 8 with a remainder of 164.
The number 8 becomes the next digit in our result. 
Result so far: 86739.4748
The remainder is 164 after subtracting 3656 from 3820.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1640, and continue the process.

Step 13:
If we divide 1640 by 457, we get 3 and a remainder of 269.
The number 3 becomes the next digit in our result. 
Result so far: 86739.47483
The remainder is 269 after subtracting 1371 from 1640.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2690, and continue the process.

Step 14:
457 goes into 2690 5 times with a remainder of 405.
Put 5 as the next digit of the answer. 
Result so far: 86739.474835
If we subtract 2285 from 2690, we get 405.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4050, and continue the process.

On to step 15:
When dividing 4050 by 457, we get 8 with a remainder of 394.
Record the quotient 8 as the next digit in the result. 
Result so far: 86739.4748358
Deduct 3656 from 4050 and we're left with 394.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3940, and continue the process.

Advancing to step 16:
457 can be fit into 3940 8 times, resulting in a remainder of 284.
Write down 8 as next digit of the result. 
Result so far: 86739.47483588
If we take 3656 away from 3940, we end up with 284.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2840, and continue the process.

Our division results in 86739.47483588 with a remaining 2.84e-07.