Let's divide 21712 by 87
Let's see how many times 87 fits into 21712.

On to step 1:
The number 87 fits into 2 0 times, leaving a remainder of 2.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 2 to get 2.
Append the next digit (1) from the dividend to 2 and continue with: 21 / 87

Moving on to step 2:
87 can be fit into 21 0 times, resulting in a remainder of 21.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 21 after subtracting 0 from 21.
Append the next digit (7) from the dividend to 21 and continue with: 217 / 87

Advancing to step 3:
87 goes into 217 2 times with a remainder of 43.
Put 2 as the next digit of the answer. 
Result so far: 2.0
Subtract 174 from 217 to get 43.
Append the next digit (1) from the dividend to 43 and continue with: 431 / 87

Advancing to step 4:
87 goes into 431 4 times with a remainder of 83.
Use 4 as the next digit of our solution. 
Result so far: 24.0
Subtract 348 from 431 to get 83.
Include the next digit (2) from the dividend after 83, then repeat: 832 / 87

On to step 5:
87 can be fit into 832 9 times, resulting in a remainder of 49.
Put 9 as the next digit of the answer. 
Result so far: 249.0
If we subtract 783 from 832, we get 49.
Since there are no more digits in the dividend, we add a zero to the remainder making it 490, and continue the process.

Advancing to step 6:
87 goes into 490 5 times with a remainder of 55.
The number 5 becomes the next digit in our result. 
Result so far: 249.5
If we subtract 435 from 490, we get 55.
Since there are no more digits in the dividend, we add a zero to the remainder making it 550, and continue the process.

Moving on to step 7:
550 divided by 87 is 6 with a remainder of 28.
Record the quotient 6 as the next digit in the result. 
Result so far: 249.56
Deduct 522 from 550 and we're left with 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Advancing to step 8:
87 can be fit into 280 3 times, resulting in a remainder of 19.
Use 3 as the next digit of our solution. 
Result so far: 249.563
The remainder is 19 after subtracting 261 from 280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Advancing to step 9:
If we divide 190 by 87, we get 2 and a remainder of 16.
Put 2 as the next digit of the answer. 
Result so far: 249.5632
Subtract 174 from 190 to get 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 10:
87 can be fit into 160 1 times, resulting in a remainder of 73.
Record the quotient 1 as the next digit in the result. 
Result so far: 249.56321
If we subtract 87 from 160, we get 73.
Since there are no more digits in the dividend, we add a zero to the remainder making it 730, and continue the process.

On to step 11:
If we divide 730 by 87, we get 8 and a remainder of 34.
The number 8 becomes the next digit in our result. 
Result so far: 249.563218
The remainder is 34 after subtracting 696 from 730.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Moving on to step 12:
When dividing 340 by 87, we get 3 with a remainder of 79.
Put 3 as the next digit of the answer. 
Result so far: 249.5632183
Subtracting 261 from 340 leaves us 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 13:
87 goes into 790 9 times with a remainder of 7.
The number 9 becomes the next digit in our result. 
Result so far: 249.56321839
Subtract 783 from 790 to get 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

After the division, we end up with 249.56321839 and a remainder of 7e-09.