We look at the division of 21421 by 87 
We want to divide 21421 by 87.

Let's proceed to step 1:
87 can be fit into 2 0 times, resulting in a remainder of 2.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 2, we end up with 2.
Append the next digit (1) from the dividend to 2 and continue with: 21 / 87

Let's proceed to step 2:
If we divide 21 by 87, we get 0 and a remainder of 21.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 21, we end up with 21.
Include the next digit (4) from the dividend after 21, then repeat: 214 / 87

Let's proceed to step 3:
214 divided by 87 is 2 with a remainder of 40.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
Subtracting 174 from 214 leaves us with 40.
Take the next digit (2) from the dividend and append it to 40, then repeat: 402 / 87

Advancing to step 4:
The number 87 fits into 402 4 times, leaving a remainder of 54.
The next digit of our result is 4. 
Result so far: 24.0
The remainder is 54 after subtracting 348 from 402.
Append the next digit (1) from the dividend to 54 and continue with: 541 / 87

Going ahead to step 5:
87 goes into 541 6 times with a remainder of 19.
Use 6 as the next digit of our solution. 
Result so far: 246.0
Subtract 522 from 541 to get 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Step 6:
The number 87 fits into 190 2 times, leaving a remainder of 16.
The next digit of our result is 2. 
Result so far: 246.2
Subtracting 174 from 190 leaves us with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Moving on to step 7:
87 goes into 160 1 times with a remainder of 73.
Use 1 as the next digit of our solution. 
Result so far: 246.21
Subtracting 87 from 160 leaves us with 73.
Since there are no more digits in the dividend, we add a zero to the remainder making it 730, and continue the process.

Let's proceed to step 8:
87 goes into 730 8 times with a remainder of 34.
Put 8 as the next digit of the answer. 
Result so far: 246.218
If we take 696 away from 730, we end up with 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Going ahead to step 9:
340 divided by 87 is 3 with a remainder of 79.
The next digit of our result is 3. 
Result so far: 246.2183
If we take 261 away from 340, we end up with 79.
Since there are no more digits in the dividend, we add a zero to the remainder making it 790, and continue the process.

Going ahead to step 10:
If we divide 790 by 87, we get 9 and a remainder of 7.
Write down 9 as next digit of the result. 
Result so far: 246.21839
Subtracting 783 from 790 leaves us with 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Moving on to step 11:
70 divided by 87 is 0 with a remainder of 70.
Put 0 as the next digit of the answer. 
Result so far: 246.21839
Subtract 0 from 70 to get 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Moving on to step 12:
The number 87 fits into 700 8 times, leaving a remainder of 4.
Put 8 as the next digit of the answer. 
Result so far: 246.2183908
If we take 696 away from 700, we end up with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Step 13:
If we divide 40 by 87, we get 0 and a remainder of 40.
The next digit of our result is 0. 
Result so far: 246.2183908
If we take 0 away from 40, we end up with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Our division results in 246.2183908 with a remaining 4e-08.