We look at the division of 84021 by 50 
We're looking to find how many times 50 goes into 84021.

Let's proceed to step 1:
50 can be fit into 8 0 times, resulting in a remainder of 8.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 8 after subtracting 0 from 8.
Bring next digit (4) of the dividend behind the 8 and repeat the process: 84 / 50

Moving on to step 2:
50 can be fit into 84 1 times, resulting in a remainder of 34.
The next digit of our result is 1. 
Result so far: 1.0
If we subtract 50 from 84, we get 34.
Take the next digit (0) from the dividend and append it to 34, then repeat: 340 / 50

On to step 3:
The number 50 fits into 340 6 times, leaving a remainder of 40.
Record the quotient 6 as the next digit in the result. 
Result so far: 16.0
If we subtract 300 from 340, we get 40.
Grab the next digit (2) from the dividend, add it to 40, then carry on: 402 / 50

Going ahead to step 4:
If we divide 402 by 50, we get 8 and a remainder of 2.
The number 8 becomes the next digit in our result. 
Result so far: 168.0
If we subtract 400 from 402, we get 2.
Take the next digit (1) from the dividend and append it to 2, then repeat: 21 / 50

Step 5:
If we divide 21 by 50, we get 0 and a remainder of 21.
Record the quotient 0 as the next digit in the result. 
Result so far: 1680.0
Subtracting 0 from 21 leaves us with 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Moving on to step 6:
50 goes into 210 4 times with a remainder of 10.
Use 4 as the next digit of our solution. 
Result so far: 1680.4
If we take 200 away from 210, we end up 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.

Advancing to step 7:
100 divided by 50 is 2 with a remainder of 0.
Record the quotient 2 as the next digit in the result. 
Result so far: 1680.42
Subtract 100 from 100 to 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.

Going ahead to step 8:
0 divided by 50 is 0 with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 1680.42
If we subtract 0 from 0, 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.

Step 9:
The number 50 fits into 0 0 times, leaving a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 1680.42
Subtract 0 from 0 to 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.

The final result is 1680.42 with a remainder of 0.0.