405930 ÷ 39 
We want to figure out the number of times 405930 can be divided by 39.

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
Subtracting 0 from 4 leaves us with 4.
Bring next digit (0) of the dividend behind the 4 and repeat the process: 40 / 39

Going ahead to step 2:
When dividing 40 by 39, we get 1 with a remainder of 1.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
If we take 39 away from 40, we end up with 1.
Take the next digit (5) from the dividend and append it to 1, then repeat: 15 / 39

Let's proceed to step 3:
The number 39 fits into 15 0 times, leaving a remainder of 15.
The next digit of our result is 0. 
Result so far: 10.0
Deduct 0 from 15 and we're left with 15.
Fetch the next digit (9) from the dividend, attach it to 15 and continue: 159 / 39

Moving on to step 4:
159 divided by 39 is 4 with a remainder of 3.
The number 4 becomes the next digit in our result. 
Result so far: 104.0
Subtract 156 from 159 to get 3.
Take the next digit (3) from the dividend and append it to 3, then repeat: 33 / 39

On to step 5:
The number 39 fits into 33 0 times, leaving a remainder of 33.
Write down 0 as next digit of the result. 
Result so far: 1040.0
Subtract 0 from 33 to get 33.
Bring next digit (0) of the dividend behind the 33 and repeat the process: 330 / 39

Advancing to step 6:
39 can be fit into 330 8 times, resulting in a remainder of 18.
Record the quotient 8 as the next digit in the result. 
Result so far: 10408.0
Deduct 312 from 330 and we're left with 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

On to step 7:
If we divide 180 by 39, we get 4 and a remainder of 24.
Record the quotient 4 as the next digit in the result. 
Result so far: 10408.4
If we subtract 156 from 180, we get 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Step 8:
The number 39 fits into 240 6 times, leaving a remainder of 6.
Put 6 as the next digit of the answer. 
Result so far: 10408.46
Subtracting 234 from 240 leaves us with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Step 9:
60 divided by 39 is 1 with a remainder of 21.
Write down 1 as next digit of the result. 
Result so far: 10408.461
Subtracting 39 from 60 leaves us with 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Step 10:
The number 39 fits into 210 5 times, leaving a remainder of 15.
The number 5 becomes the next digit in our result. 
Result so far: 10408.4615
If we subtract 195 from 210, we get 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

On to step 11:
If we divide 150 by 39, we get 3 and a remainder of 33.
The number 3 becomes the next digit in our result. 
Result so far: 10408.46153
Deduct 117 from 150 and we're left with 33.
Since there are no more digits in the dividend, we add a zero to the remainder making it 330, and continue the process.

Let's proceed to step 12:
39 goes into 330 8 times with a remainder of 18.
Use 8 as the next digit of our solution. 
Result so far: 10408.461538
Deduct 312 from 330 and we're left with 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Step 13:
180 divided by 39 is 4 with a remainder of 24.
Use 4 as the next digit of our solution. 
Result so far: 10408.4615384
If we subtract 156 from 180, we get 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Moving on to step 14:
If we divide 240 by 39, we get 6 and a remainder of 6.
Write down 6 as next digit of the result. 
Result so far: 10408.46153846
If we subtract 234 from 240, we get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Our division results in 10408.46153846 with a remaining 6e-09.