Let's divide 153999 by 84
Let's see how many times 84 fits into 153999.

Going ahead to step 1:
84 can be fit into 1 0 times, resulting in a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 1 and we're left with 1.
Grab the next digit (5) from the dividend, add it to 1, then carry on: 15 / 84

Step 2:
84 goes into 15 0 times with a remainder of 15.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 15 after subtracting 0 from 15.
Bring next digit (3) of the dividend behind the 15 and repeat the process: 153 / 84

On to step 3:
153 divided by 84 is 1 with a remainder of 69.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
If we subtract 84 from 153, we get 69.
Bring next digit (9) of the dividend behind the 69 and repeat the process: 699 / 84

Step 4:
If we divide 699 by 84, we get 8 and a remainder of 27.
Write down 8 as next digit of the result. 
Result so far: 18.0
If we take 672 away from 699, we end up with 27.
Take the next digit (9) from the dividend and append it to 27, then repeat: 279 / 84

On to step 5:
84 goes into 279 3 times with a remainder of 27.
Write down 3 as next digit of the result. 
Result so far: 183.0
Deduct 252 from 279 and we're left with 27.
Grab the next digit (9) from the dividend, add it to 27, then carry on: 279 / 84

Moving on to step 6:
If we divide 279 by 84, we get 3 and a remainder of 27.
Record the quotient 3 as the next digit in the result. 
Result so far: 1833.0
Subtracting 252 from 279 leaves us with 27.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

Let's proceed to step 7:
270 divided by 84 is 3 with a remainder of 18.
Record the quotient 3 as the next digit in the result. 
Result so far: 1833.3
Subtract 252 from 270 to get 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Moving on to step 8:
180 divided by 84 is 2 with a remainder of 12.
Write down 2 as next digit of the result. 
Result so far: 1833.32
If we take 168 away from 180, 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:
120 divided by 84 is 1 with a remainder of 36.
The next digit of our result is 1. 
Result so far: 1833.321
Subtract 84 from 120 to get 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Going ahead to step 10:
360 divided by 84 is 4 with a remainder of 24.
Write down 4 as next digit of the result. 
Result so far: 1833.3214
Subtract 336 from 360 to get 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Advancing to step 11:
If we divide 240 by 84, we get 2 and a remainder of 72.
The next digit of our result is 2. 
Result so far: 1833.32142
Subtracting 168 from 240 leaves us with 72.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

Let's proceed to step 12:
If we divide 720 by 84, we get 8 and a remainder of 48.
The number 8 becomes the next digit in our result. 
Result so far: 1833.321428
The remainder is 48 after subtracting 672 from 720.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Moving on to step 13:
480 divided by 84 is 5 with a remainder of 60.
Write down 5 as next digit of the result. 
Result so far: 1833.3214285
If we subtract 420 from 480, we get 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Step 14:
600 divided by 84 is 7 with a remainder of 12.
Put 7 as the next digit of the answer. 
Result so far: 1833.32142857
If we subtract 588 from 600, we get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

The final result is 1833.32142857 with a remainder of 1.2e-08.