129407 divided by 16 
We want to divide 129407 by 16.

Let's proceed to step 1:
16 can be fit into 1 0 times, resulting in a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 1, we end up with 1.
Grab the next digit (2) from the dividend, add it to 1, then carry on: 12 / 16

Moving on to step 2:
The number 16 fits into 12 0 times, leaving a remainder of 12.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 12 and we're left with 12.
Fetch the next digit (9) from the dividend, attach it to 12 and continue: 129 / 16

Moving on to step 3:
16 can be fit into 129 8 times, resulting in a remainder of 1.
Write down 8 as next digit of the result. 
Result so far: 8.0
The remainder is 1 after subtracting 128 from 129.
Append the next digit (4) from the dividend to 1 and continue with: 14 / 16

Moving on to step 4:
14 divided by 16 is 0 with a remainder of 14.
Put 0 as the next digit of the answer. 
Result so far: 80.0
Deduct 0 from 14 and we're left with 14.
Fetch the next digit (0) from the dividend, attach it to 14 and continue: 140 / 16

On to step 5:
16 goes into 140 8 times with a remainder of 12.
The next digit of our result is 8. 
Result so far: 808.0
If we subtract 128 from 140, we get 12.
Bring next digit (7) of the dividend behind the 12 and repeat the process: 127 / 16

Moving on to step 6:
127 divided by 16 is 7 with a remainder of 15.
Record the quotient 7 as the next digit in the result. 
Result so far: 8087.0
The remainder is 15 after subtracting 112 from 127.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Step 7:
If we divide 150 by 16, we get 9 and a remainder of 6.
Use 9 as the next digit of our solution. 
Result so far: 8087.9
Subtract 144 from 150 to 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.

On to step 8:
60 divided by 16 is 3 with a remainder of 12.
The number 3 becomes the next digit in our result. 
Result so far: 8087.93
If we take 48 away from 60, we end up with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

On to step 9:
16 goes into 120 7 times with a remainder of 8.
Use 7 as the next digit of our solution. 
Result so far: 8087.937
Subtract 112 from 120 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.

Moving on to step 10:
The number 16 fits into 80 5 times, leaving a remainder of 0.
The number 5 becomes the next digit in our result. 
Result so far: 8087.9375
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.

Step 11:
0 divided by 16 is 0 with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 8087.9375
Deduct 0 from 0 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.

Going ahead to step 12:
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: 8087.9375
If we subtract 0 from 0, we get 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 8087.9375 and a remainder of 0.0.