We divide 402356 by 15
We want to divide 402356 by 15.

Going ahead to step 1:
The number 15 fits into 4 0 times, leaving a remainder of 4.
The number 0 becomes the next digit in our result. 
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 / 15

Let's proceed to step 2:
15 can be fit into 40 2 times, resulting in a remainder of 10.
Use 2 as the next digit of our solution. 
Result so far: 2.0
If we take 30 away from 40, we end up with 10.
Fetch the next digit (2) from the dividend, attach it to 10 and continue: 102 / 15

Going ahead to step 3:
102 divided by 15 is 6 with a remainder of 12.
Record the quotient 6 as the next digit in the result. 
Result so far: 26.0
If we take 90 away from 102, we end up with 12.
Take the next digit (3) from the dividend and append it to 12, then repeat: 123 / 15

Let's proceed to step 4:
If we divide 123 by 15, we get 8 and a remainder of 3.
Put 8 as the next digit of the answer. 
Result so far: 268.0
Subtracting 120 from 123 leaves us with 3.
Include the next digit (5) from the dividend after 3, then repeat: 35 / 15

Going ahead to step 5:
When dividing 35 by 15, we get 2 with a remainder of 5.
The next digit of our result is 2. 
Result so far: 2682.0
Subtract 30 from 35 to get 5.
Take the next digit (6) from the dividend and append it to 5, then repeat: 56 / 15

Let's proceed to step 6:
The number 15 fits into 56 3 times, leaving a remainder of 11.
Write down 3 as next digit of the result. 
Result so far: 26823.0
Subtract 45 from 56 to 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.

On to step 7:
15 can be fit into 110 7 times, resulting in a remainder of 5.
The number 7 becomes the next digit in our result. 
Result so far: 26823.7
The remainder is 5 after subtracting 105 from 110.
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 8:
15 goes into 50 3 times with a remainder of 5.
Put 3 as the next digit of the answer. 
Result so far: 26823.73
If we take 45 away from 50, we end up 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.

Advancing to step 9:
If we divide 50 by 15, we get 3 and a remainder of 5.
The number 3 becomes the next digit in our result. 
Result so far: 26823.733
Subtract 45 from 50 to get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

The final outcome is 26823.733, with a leftover of 0.0005.