We look at the division of 211721 by 52 
We want to figure out the number of times 211721 can be divided by 52.

On to step 1:
The number 52 fits into 2 0 times, leaving a remainder of 2.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 2 to get 2.
Bring next digit (1) of the dividend behind the 2 and repeat the process: 21 / 52

Going ahead to step 2:
If we divide 21 by 52, we get 0 and a remainder of 21.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 21 and we're left with 21.
Fetch the next digit (1) from the dividend, attach it to 21 and continue: 211 / 52

Let's proceed to step 3:
52 can be fit into 211 4 times, resulting in a remainder of 3.
Put 4 as the next digit of the answer. 
Result so far: 4.0
If we take 208 away from 211, we end up with 3.
Grab the next digit (7) from the dividend, add it to 3, then carry on: 37 / 52

Going ahead to step 4:
When dividing 37 by 52, we get 0 with a remainder of 37.
The next digit of our result is 0. 
Result so far: 40.0
Deduct 0 from 37 and we're left with 37.
Include the next digit (2) from the dividend after 37, then repeat: 372 / 52

Let's proceed to step 5:
If we divide 372 by 52, we get 7 and a remainder of 8.
The number 7 becomes the next digit in our result. 
Result so far: 407.0
If we take 364 away from 372, we end up with 8.
Append the next digit (1) from the dividend to 8 and continue with: 81 / 52

On to step 6:
When dividing 81 by 52, we get 1 with a remainder of 29.
The next digit of our result is 1. 
Result so far: 4071.0
Deduct 52 from 81 and we're left with 29.
Since there are no more digits in the dividend, we add a zero to the remainder making it 290, and continue the process.

Let's proceed to step 7:
The number 52 fits into 290 5 times, leaving a remainder of 30.
Record the quotient 5 as the next digit in the result. 
Result so far: 4071.5
If we subtract 260 from 290, we get 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Step 8:
52 can be fit into 300 5 times, resulting in a remainder of 40.
Use 5 as the next digit of our solution. 
Result so far: 4071.55
Subtract 260 from 300 to get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

The final result is 4071.55 with a remainder of 0.04.