We look at the division of 406400 by 16 
Let's see how many times 16 fits into 406400.

Step 1:
If we divide 4 by 16, we get 0 and a remainder of 4.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 4, we end up with 4.
Take the next digit (0) from the dividend and append it to 4, then repeat: 40 / 16

Moving on to step 2:
16 goes into 40 2 times with a remainder of 8.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
If we take 32 away from 40, we end up with 8.
Bring next digit (6) of the dividend behind the 8 and repeat the process: 86 / 16

On to step 3:
16 can be fit into 86 5 times, resulting in a remainder of 6.
The next digit of our result is 5. 
Result so far: 25.0
The remainder is 6 after subtracting 80 from 86.
Take the next digit (4) from the dividend and append it to 6, then repeat: 64 / 16

Moving on to step 4:
64 divided by 16 is 4 with a remainder of 0.
The next digit of our result is 4. 
Result so far: 254.0
Deduct 64 from 64 and we're left with 0.
Append the next digit (0) from the dividend to 0 and continue with: 0 / 16

Advancing to step 5:
If we divide 0 by 16, we get 0 and a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 2540.0
If we subtract 0 from 0, we get 0.
Bring next digit (0) of the dividend behind the 0 and repeat the process: 0 / 16

Step 6:
The number 16 fits into 0 0 times, leaving a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 25400.0
The remainder is 0 after subtracting 0 from 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

On to step 7:
0 divided by 16 is 0 with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 25400.0
The remainder is 0 after subtracting 0 from 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Going ahead to step 8:
0 divided by 16 is 0 with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 25400.0
Subtracting 0 from 0 leaves us with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

After the division, we end up with 25400.0 and a remainder of 0.0.