We're dividing 3958593 by 668 
We're looking to find how many times 668 goes into 3958593.

Advancing to step 1:
668 can be fit into 3 0 times, resulting in a remainder of 3.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 3 after subtracting 0 from 3.
Append the next digit (9) from the dividend to 3 and continue with: 39 / 668

On to step 2:
668 goes into 39 0 times with a remainder of 39.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 39 and we're left with 39.
Take the next digit (5) from the dividend and append it to 39, then repeat: 395 / 668

Advancing to step 3:
395 divided by 668 is 0 with a remainder of 395.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 395 and we're left with 395.
Include the next digit (8) from the dividend after 395, then repeat: 3958 / 668

Moving on to step 4:
If we divide 3958 by 668, we get 5 and a remainder of 618.
The number 5 becomes the next digit in our result. 
Result so far: 5.0
Subtracting 3340 from 3958 leaves us with 618.
Append the next digit (5) from the dividend to 618 and continue with: 6185 / 668

Moving on to step 5:
If we divide 6185 by 668, we get 9 and a remainder of 173.
Write down 9 as next digit of the result. 
Result so far: 59.0
The remainder is 173 after subtracting 6012 from 6185.
Grab the next digit (9) from the dividend, add it to 173, then carry on: 1739 / 668

Let's proceed to step 6:
If we divide 1739 by 668, we get 2 and a remainder of 403.
Put 2 as the next digit of the answer. 
Result so far: 592.0
Subtracting 1336 from 1739 leaves us with 403.
Grab the next digit (3) from the dividend, add it to 403, then carry on: 4033 / 668

On to step 7:
668 can be fit into 4033 6 times, resulting in a remainder of 25.
The number 6 becomes the next digit in our result. 
Result so far: 5926.0
If we subtract 4008 from 4033, we get 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Moving on to step 8:
If we divide 250 by 668, we get 0 and a remainder of 250.
Put 0 as the next digit of the answer. 
Result so far: 5926.0
The remainder is 250 after subtracting 0 from 250.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2500, and continue the process.

Moving on to step 9:
2500 divided by 668 is 3 with a remainder of 496.
Put 3 as the next digit of the answer. 
Result so far: 5926.03
If we subtract 2004 from 2500, we get 496.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4960, and continue the process.

Let's proceed to step 10:
If we divide 4960 by 668, we get 7 and a remainder of 284.
Use 7 as the next digit of our solution. 
Result so far: 5926.037
If we subtract 4676 from 4960, we get 284.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2840, and continue the process.

Moving on to step 11:
668 can be fit into 2840 4 times, resulting in a remainder of 168.
Put 4 as the next digit of the answer. 
Result so far: 5926.0374
The remainder is 168 after subtracting 2672 from 2840.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1680, and continue the process.

Step 12:
1680 divided by 668 is 2 with a remainder of 344.
The next digit of our result is 2. 
Result so far: 5926.03742
The remainder is 344 after subtracting 1336 from 1680.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3440, and continue the process.

On to step 13:
The number 668 fits into 3440 5 times, leaving a remainder of 100.
Record the quotient 5 as the next digit in the result. 
Result so far: 5926.037425
If we subtract 3340 from 3440, we get 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1000, and continue the process.

Step 14:
When dividing 1000 by 668, we get 1 with a remainder of 332.
Put 1 as the next digit of the answer. 
Result so far: 5926.0374251
Deduct 668 from 1000 and we're left with 332.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3320, and continue the process.

Going ahead to step 15:
3320 divided by 668 is 4 with a remainder of 648.
The number 4 becomes the next digit in our result. 
Result so far: 5926.03742514
If we subtract 2672 from 3320, we get 648.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6480, and continue the process.

The final result is 5926.03742514 with a remainder of 6.48e-07.