We divide 431809 by 16
We want to divide 431809 by 16.

Going ahead to step 1:
The number 16 fits into 4 0 times, leaving a remainder of 4.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 4 to get 4.
Grab the next digit (3) from the dividend, add it to 4, then carry on: 43 / 16

Moving on to step 2:
If we divide 43 by 16, we get 2 and a remainder of 11.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
Subtracting 32 from 43 leaves us with 11.
Append the next digit (1) from the dividend to 11 and continue with: 111 / 16

Step 3:
16 can be fit into 111 6 times, resulting in a remainder of 15.
Use 6 as the next digit of our solution. 
Result so far: 26.0
If we subtract 96 from 111, we get 15.
Append the next digit (8) from the dividend to 15 and continue with: 158 / 16

Moving on to step 4:
16 goes into 158 9 times with a remainder of 14.
The next digit of our result is 9. 
Result so far: 269.0
If we take 144 away from 158, we end up with 14.
Append the next digit (0) from the dividend to 14 and continue with: 140 / 16

Moving on to step 5:
The number 16 fits into 140 8 times, leaving a remainder of 12.
Use 8 as the next digit of our solution. 
Result so far: 2698.0
Deduct 128 from 140 and we're left with 12.
Take the next digit (9) from the dividend and append it to 12, then repeat: 129 / 16

Step 6:
If we divide 129 by 16, we get 8 and a remainder of 1.
The number 8 becomes the next digit in our result. 
Result so far: 26988.0
Deduct 128 from 129 and we're left with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Let's proceed to step 7:
If we divide 10 by 16, we get 0 and a remainder of 10.
Put 0 as the next digit of the answer. 
Result so far: 26988.0
If we subtract 0 from 10, we get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

On to step 8:
If we divide 100 by 16, we get 6 and a remainder of 4.
Write down 6 as next digit of the result. 
Result so far: 26988.06
The remainder is 4 after subtracting 96 from 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Let's proceed to step 9:
The number 16 fits into 40 2 times, leaving a remainder of 8.
The number 2 becomes the next digit in our result. 
Result so far: 26988.062
Subtract 32 from 40 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.

Going ahead to step 10:
When dividing 80 by 16, we get 5 with a remainder of 0.
Put 5 as the next digit of the answer. 
Result so far: 26988.0625
Deduct 80 from 80 and we're left 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.

Let's proceed to step 11:
16 goes into 0 0 times with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 26988.0625
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.

Moving on to step 12:
16 goes into 0 0 times with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 26988.0625
If we take 0 away from 0, we end up 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.

Our division results in 26988.0625 with a remaining 0.0.