Let's divide 21050 by 84
We want to divide 21050 by 84.

Advancing to step 1:
2 divided by 84 is 0 with a remainder of 2.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 2 and we're left with 2.
Fetch the next digit (1) from the dividend, attach it to 2 and continue: 21 / 84

Moving on to step 2:
84 can be fit into 21 0 times, resulting in a remainder of 21.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 21 after subtracting 0 from 21.
Take the next digit (0) from the dividend and append it to 21, then repeat: 210 / 84

Going ahead to step 3:
If we divide 210 by 84, we get 2 and a remainder of 42.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
Subtracting 168 from 210 leaves us with 42.
Grab the next digit (5) from the dividend, add it to 42, then carry on: 425 / 84

Advancing to step 4:
If we divide 425 by 84, we get 5 and a remainder of 5.
Write down 5 as next digit of the result. 
Result so far: 25.0
The remainder is 5 after subtracting 420 from 425.
Take the next digit (0) from the dividend and append it to 5, then repeat: 50 / 84

Let's proceed to step 5:
84 can be fit into 50 0 times, resulting in a remainder of 50.
Use 0 as the next digit of our solution. 
Result so far: 250.0
Deduct 0 from 50 and we're left with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Let's proceed to step 6:
The number 84 fits into 500 5 times, leaving a remainder of 80.
Put 5 as the next digit of the answer. 
Result so far: 250.5
If we subtract 420 from 500, we get 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

On to step 7:
If we divide 800 by 84, we get 9 and a remainder of 44.
Record the quotient 9 as the next digit in the result. 
Result so far: 250.59
Deduct 756 from 800 and we're left with 44.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

On to step 8:
When dividing 440 by 84, we get 5 with a remainder of 20.
The next digit of our result is 5. 
Result so far: 250.595
If we take 420 away from 440, we end up with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Let's proceed to step 9:
If we divide 200 by 84, we get 2 and a remainder of 32.
The next digit of our result is 2. 
Result so far: 250.5952
Deduct 168 from 200 and we're left with 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Step 10:
If we divide 320 by 84, we get 3 and a remainder of 68.
The number 3 becomes the next digit in our result. 
Result so far: 250.59523
If we take 252 away from 320, we end up with 68.
Since there are no more digits in the dividend, we add a zero to the remainder making it 680, and continue the process.

On to step 11:
The number 84 fits into 680 8 times, leaving a remainder of 8.
The next digit of our result is 8. 
Result so far: 250.595238
Subtracting 672 from 680 leaves us 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.

Advancing to step 12:
84 goes into 80 0 times with a remainder of 80.
Write down 0 as next digit of the result. 
Result so far: 250.595238
If we take 0 away from 80, we end up with 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

On to step 13:
84 goes into 800 9 times with a remainder of 44.
The number 9 becomes the next digit in our result. 
Result so far: 250.59523809
If we take 756 away from 800, we end up with 44.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

The final outcome is 250.59523809, with a leftover of 4.4e-08.