We look at the division of 15828423 by 405 
We want to figure out the number of times 15828423 can be divided by 405.

Step 1:
If we divide 1 by 405, we get 0 and a remainder of 1.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 1, we get 1.
Fetch the next digit (5) from the dividend, attach it to 1 and continue: 15 / 405

Advancing to step 2:
15 divided by 405 is 0 with a remainder of 15.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 15, we get 15.
Take the next digit (8) from the dividend and append it to 15, then repeat: 158 / 405

Advancing to step 3:
405 can be fit into 158 0 times, resulting in a remainder of 158.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 158 to get 158.
Append the next digit (2) from the dividend to 158 and continue with: 1582 / 405

Step 4:
405 can be fit into 1582 3 times, resulting in a remainder of 367.
Use 3 as the next digit of our solution. 
Result so far: 3.0
The remainder is 367 after subtracting 1215 from 1582.
Fetch the next digit (8) from the dividend, attach it to 367 and continue: 3678 / 405

Let's proceed to step 5:
405 can be fit into 3678 9 times, resulting in a remainder of 33.
Record the quotient 9 as the next digit in the result. 
Result so far: 39.0
If we subtract 3645 from 3678, we get 33.
Grab the next digit (4) from the dividend, add it to 33, then carry on: 334 / 405

On to step 6:
405 goes into 334 0 times with a remainder of 334.
Use 0 as the next digit of our solution. 
Result so far: 390.0
Subtracting 0 from 334 leaves us with 334.
Fetch the next digit (2) from the dividend, attach it to 334 and continue: 3342 / 405

Let's proceed to step 7:
The number 405 fits into 3342 8 times, leaving a remainder of 102.
Put 8 as the next digit of the answer. 
Result so far: 3908.0
The remainder is 102 after subtracting 3240 from 3342.
Bring next digit (3) of the dividend behind the 102 and repeat the process: 1023 / 405

Going ahead to step 8:
The number 405 fits into 1023 2 times, leaving a remainder of 213.
Put 2 as the next digit of the answer. 
Result so far: 39082.0
The remainder is 213 after subtracting 810 from 1023.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2130, and continue the process.

Advancing to step 9:
If we divide 2130 by 405, we get 5 and a remainder of 105.
Record the quotient 5 as the next digit in the result. 
Result so far: 39082.5
The remainder is 105 after subtracting 2025 from 2130.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1050, and continue the process.

On to step 10:
405 can be fit into 1050 2 times, resulting in a remainder of 240.
The number 2 becomes the next digit in our result. 
Result so far: 39082.52
Deduct 810 from 1050 and we're left with 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2400, and continue the process.

Moving on to step 11:
405 goes into 2400 5 times with a remainder of 375.
Put 5 as the next digit of the answer. 
Result so far: 39082.525
Subtracting 2025 from 2400 leaves us with 375.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3750, and continue the process.

Going ahead to step 12:
If we divide 3750 by 405, we get 9 and a remainder of 105.
The number 9 becomes the next digit in our result. 
Result so far: 39082.5259
Deduct 3645 from 3750 and we're left with 105.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1050, and continue the process.

On to step 13:
When dividing 1050 by 405, we get 2 with a remainder of 240.
The next digit of our result is 2. 
Result so far: 39082.52592
Subtracting 810 from 1050 leaves us with 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2400, and continue the process.

Moving on to step 14:
405 goes into 2400 5 times with a remainder of 375.
Use 5 as the next digit of our solution. 
Result so far: 39082.525925
Deduct 2025 from 2400 and we're left with 375.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3750, and continue the process.

Let's proceed to step 15:
The number 405 fits into 3750 9 times, leaving a remainder of 105.
Write down 9 as next digit of the result. 
Result so far: 39082.5259259
The remainder is 105 after subtracting 3645 from 3750.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1050, and continue the process.

On to step 16:
If we divide 1050 by 405, we get 2 and a remainder of 240.
The next digit of our result is 2. 
Result so far: 39082.52592592
Subtracting 810 from 1050 leaves us with 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2400, and continue the process.

The final result is 39082.52592592 with a remainder of 2.4e-07.