402668 ÷ 39 
We're looking to find how many times 39 goes into 402668.

Going ahead to step 1:
4 divided by 39 is 0 with a remainder of 4.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 4, we get 4.
Fetch the next digit (0) from the dividend, attach it to 4 and continue: 40 / 39

On to step 2:
If we divide 40 by 39, we get 1 and a remainder of 1.
The next digit of our result is 1. 
Result so far: 1.0
The remainder is 1 after subtracting 39 from 40.
Fetch the next digit (2) from the dividend, attach it to 1 and continue: 12 / 39

Going ahead to step 3:
The number 39 fits into 12 0 times, leaving a remainder of 12.
Put 0 as the next digit of the answer. 
Result so far: 10.0
If we take 0 away from 12, we end up with 12.
Include the next digit (6) from the dividend after 12, then repeat: 126 / 39

Let's proceed to step 4:
If we divide 126 by 39, we get 3 and a remainder of 9.
The next digit of our result is 3. 
Result so far: 103.0
If we take 117 away from 126, we end up with 9.
Bring next digit (6) of the dividend behind the 9 and repeat the process: 96 / 39

On to step 5:
96 divided by 39 is 2 with a remainder of 18.
The next digit of our result is 2. 
Result so far: 1032.0
The remainder is 18 after subtracting 78 from 96.
Include the next digit (8) from the dividend after 18, then repeat: 188 / 39

Let's proceed to step 6:
If we divide 188 by 39, we get 4 and a remainder of 32.
The next digit of our result is 4. 
Result so far: 10324.0
If we take 156 away from 188, we end up with 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

On to step 7:
39 can be fit into 320 8 times, resulting in a remainder of 8.
Write down 8 as next digit of the result. 
Result so far: 10324.8
Subtract 312 from 320 to get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Moving on to step 8:
The number 39 fits into 80 2 times, leaving a remainder of 2.
Put 2 as the next digit of the answer. 
Result so far: 10324.82
Subtract 78 from 80 to get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

On to step 9:
When dividing 20 by 39, we get 0 with a remainder of 20.
The next digit of our result is 0. 
Result so far: 10324.82
The remainder is 20 after subtracting 0 from 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 10:
39 goes into 200 5 times with a remainder of 5.
Put 5 as the next digit of the answer. 
Result so far: 10324.8205
Subtracting 195 from 200 leaves us with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

On to step 11:
If we divide 50 by 39, we get 1 and a remainder of 11.
Put 1 as the next digit of the answer. 
Result so far: 10324.82051
If we subtract 39 from 50, we get 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Going ahead to step 12:
When dividing 110 by 39, we get 2 with a remainder of 32.
Write down 2 as next digit of the result. 
Result so far: 10324.820512
The remainder is 32 after subtracting 78 from 110.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Going ahead to step 13:
The number 39 fits into 320 8 times, leaving a remainder of 8.
Put 8 as the next digit of the answer. 
Result so far: 10324.8205128
If we subtract 312 from 320, we get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Let's proceed to step 14:
80 divided by 39 is 2 with a remainder of 2.
Put 2 as the next digit of the answer. 
Result so far: 10324.82051282
The remainder is 2 after subtracting 78 from 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

The final outcome is 10324.82051282, with a leftover of 2e-09.