129147 ÷ 84 
Let's see how many times 84 fits into 129147.

Going ahead to step 1:
If we divide 1 by 84, we get 0 and a remainder of 1.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 1 leaves us with 1.
Append the next digit (2) from the dividend to 1 and continue with: 12 / 84

Going ahead to step 2:
The number 84 fits into 12 0 times, leaving a remainder of 12.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 12 leaves us with 12.
Include the next digit (9) from the dividend after 12, then repeat: 129 / 84

Step 3:
84 goes into 129 1 times with a remainder of 45.
Write down 1 as next digit of the result. 
Result so far: 1.0
Deduct 84 from 129 and we're left with 45.
Append the next digit (1) from the dividend to 45 and continue with: 451 / 84

Step 4:
If we divide 451 by 84, we get 5 and a remainder of 31.
Record the quotient 5 as the next digit in the result. 
Result so far: 15.0
Deduct 420 from 451 and we're left with 31.
Fetch the next digit (4) from the dividend, attach it to 31 and continue: 314 / 84

On to step 5:
When dividing 314 by 84, we get 3 with a remainder of 62.
Write down 3 as next digit of the result. 
Result so far: 153.0
Deduct 252 from 314 and we're left with 62.
Bring next digit (7) of the dividend behind the 62 and repeat the process: 627 / 84

Advancing to step 6:
627 divided by 84 is 7 with a remainder of 39.
Put 7 as the next digit of the answer. 
Result so far: 1537.0
If we subtract 588 from 627, we get 39.
Since there are no more digits in the dividend, we add a zero to the remainder making it 390, and continue the process.

Moving on to step 7:
84 goes into 390 4 times with a remainder of 54.
The next digit of our result is 4. 
Result so far: 1537.4
Deduct 336 from 390 and we're left with 54.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

Advancing to step 8:
84 can be fit into 540 6 times, resulting in a remainder of 36.
Use 6 as the next digit of our solution. 
Result so far: 1537.46
Deduct 504 from 540 and we're left with 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Advancing to step 9:
84 can be fit into 360 4 times, resulting in a remainder of 24.
The next digit of our result is 4. 
Result so far: 1537.464
Subtracting 336 from 360 leaves us with 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

On to step 10:
84 goes into 240 2 times with a remainder of 72.
Put 2 as the next digit of the answer. 
Result so far: 1537.4642
Subtract 168 from 240 to get 72.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

Going ahead to step 11:
If we divide 720 by 84, we get 8 and a remainder of 48.
Write down 8 as next digit of the result. 
Result so far: 1537.46428
Deduct 672 from 720 and we're left with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Let's proceed to step 12:
84 goes into 480 5 times with a remainder of 60.
Put 5 as the next digit of the answer. 
Result so far: 1537.464285
Deduct 420 from 480 and we're left with 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Moving on to step 13:
When dividing 600 by 84, we get 7 with a remainder of 12.
The next digit of our result is 7. 
Result so far: 1537.4642857
Deduct 588 from 600 and we're left 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.

Moving on to step 14:
If we divide 120 by 84, we get 1 and a remainder of 36.
The number 1 becomes the next digit in our result. 
Result so far: 1537.46428571
Deduct 84 from 120 and we're left with 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

After the division, we end up with 1537.46428571 and a remainder of 3.6e-08.