We look at the division of 120129 by 16 
We want to figure out the number of times 120129 can be divided by 16.

Going ahead to step 1:
16 goes into 1 0 times with a remainder of 1.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 1 after subtracting 0 from 1.
Bring next digit (2) of the dividend behind the 1 and repeat the process: 12 / 16

Moving on to step 2:
12 divided by 16 is 0 with a remainder of 12.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 12 leaves us with 12.
Append the next digit (0) from the dividend to 12 and continue with: 120 / 16

On to step 3:
If we divide 120 by 16, we get 7 and a remainder of 8.
The number 7 becomes the next digit in our result. 
Result so far: 7.0
If we take 112 away from 120, we end up with 8.
Fetch the next digit (1) from the dividend, attach it to 8 and continue: 81 / 16

Moving on to step 4:
81 divided by 16 is 5 with a remainder of 1.
The next digit of our result is 5. 
Result so far: 75.0
Subtract 80 from 81 to get 1.
Grab the next digit (2) from the dividend, add it to 1, then carry on: 12 / 16

Advancing to step 5:
12 divided by 16 is 0 with a remainder of 12.
Record the quotient 0 as the next digit in the result. 
Result so far: 750.0
Subtract 0 from 12 to get 12.
Bring next digit (9) of the dividend behind the 12 and repeat the process: 129 / 16

Step 6:
The number 16 fits into 129 8 times, leaving a remainder of 1.
Write down 8 as next digit of the result. 
Result so far: 7508.0
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.

Going ahead to step 7:
16 goes into 10 0 times with a remainder of 10.
Write down 0 as next digit of the result. 
Result so far: 7508.0
Subtracting 0 from 10 leaves us with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Let's proceed to step 8:
100 divided by 16 is 6 with a remainder of 4.
The number 6 becomes the next digit in our result. 
Result so far: 7508.06
Deduct 96 from 100 and we're left with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Going ahead to step 9:
When dividing 40 by 16, we get 2 with a remainder of 8.
Write down 2 as next digit of the result. 
Result so far: 7508.062
If we take 32 away from 40, we end up with 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:
When dividing 80 by 16, we get 5 with a remainder of 0.
The next digit of our result is 5. 
Result so far: 7508.0625
If we subtract 80 from 80, 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.

On to step 11:
16 can be fit into 0 0 times, resulting in a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 7508.0625
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.

Moving on to step 12:
If we divide 0 by 16, we get 0 and a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 7508.0625
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.

The final result is 7508.0625 with a remainder of 0.0.