19821 divided by 84 
Our goal is to divide 19821 by 84.

Advancing to step 1:
1 divided by 84 is 0 with a remainder of 1.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 1 to get 1.
Append the next digit (9) from the dividend to 1 and continue with: 19 / 84

Let's proceed to step 2:
84 goes into 19 0 times with a remainder of 19.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 19 leaves us with 19.
Take the next digit (8) from the dividend and append it to 19, then repeat: 198 / 84

Advancing to step 3:
If we divide 198 by 84, we get 2 and a remainder of 30.
Write down 2 as next digit of the result. 
Result so far: 2.0
Subtracting 168 from 198 leaves us with 30.
Take the next digit (2) from the dividend and append it to 30, then repeat: 302 / 84

Going ahead to step 4:
If we divide 302 by 84, we get 3 and a remainder of 50.
Put 3 as the next digit of the answer. 
Result so far: 23.0
If we subtract 252 from 302, we get 50.
Fetch the next digit (1) from the dividend, attach it to 50 and continue: 501 / 84

Advancing to step 5:
84 can be fit into 501 5 times, resulting in a remainder of 81.
The number 5 becomes the next digit in our result. 
Result so far: 235.0
Subtract 420 from 501 to get 81.
Since there are no more digits in the dividend, we add a zero to the remainder making it 810, and continue the process.

Step 6:
84 can be fit into 810 9 times, resulting in a remainder of 54.
The next digit of our result is 9. 
Result so far: 235.9
Deduct 756 from 810 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.

On to step 7:
84 goes into 540 6 times with a remainder of 36.
Use 6 as the next digit of our solution. 
Result so far: 235.96
If we take 504 away from 540, we end up 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.

Moving on to step 8:
84 goes into 360 4 times with a remainder of 24.
Record the quotient 4 as the next digit in the result. 
Result so far: 235.964
The remainder is 24 after subtracting 336 from 360.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Moving on to step 9:
240 divided by 84 is 2 with a remainder of 72.
Record the quotient 2 as the next digit in the result. 
Result so far: 235.9642
The remainder is 72 after subtracting 168 from 240.
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 10:
84 goes into 720 8 times with a remainder of 48.
Write down 8 as next digit of the result. 
Result so far: 235.96428
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.

Going ahead to step 11:
480 divided by 84 is 5 with a remainder of 60.
Write down 5 as next digit of the result. 
Result so far: 235.964285
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.

Let's proceed to step 12:
600 divided by 84 is 7 with a remainder of 12.
The number 7 becomes the next digit in our result. 
Result so far: 235.9642857
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.

On to step 13:
When dividing 120 by 84, we get 1 with a remainder of 36.
The next digit of our result is 1. 
Result so far: 235.96428571
The remainder is 36 after subtracting 84 from 120.
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 235.96428571 and a remainder of 3.6e-08.