We're dividing 173876 by 21 
We're looking to find how many times 21 goes into 173876.

Let's proceed to step 1:
1 divided by 21 is 0 with a remainder of 1.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 1, we end up with 1.
Bring next digit (7) of the dividend behind the 1 and repeat the process: 17 / 21

Let's proceed to step 2:
21 goes into 17 0 times with a remainder of 17.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 17, we get 17.
Fetch the next digit (3) from the dividend, attach it to 17 and continue: 173 / 21

Let's proceed to step 3:
If we divide 173 by 21, we get 8 and a remainder of 5.
The number 8 becomes the next digit in our result. 
Result so far: 8.0
If we take 168 away from 173, we end up with 5.
Include the next digit (8) from the dividend after 5, then repeat: 58 / 21

Advancing to step 4:
The number 21 fits into 58 2 times, leaving a remainder of 16.
Record the quotient 2 as the next digit in the result. 
Result so far: 82.0
Subtract 42 from 58 to get 16.
Bring next digit (7) of the dividend behind the 16 and repeat the process: 167 / 21

Moving on to step 5:
The number 21 fits into 167 7 times, leaving a remainder of 20.
The next digit of our result is 7. 
Result so far: 827.0
Subtract 147 from 167 to get 20.
Grab the next digit (6) from the dividend, add it to 20, then carry on: 206 / 21

Moving on to step 6:
If we divide 206 by 21, we get 9 and a remainder of 17.
The next digit of our result is 9. 
Result so far: 8279.0
The remainder is 17 after subtracting 189 from 206.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Going ahead to step 7:
21 can be fit into 170 8 times, resulting in a remainder of 2.
Write down 8 as next digit of the result. 
Result so far: 8279.8
Subtracting 168 from 170 leaves us with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Going ahead to step 8:
20 divided by 21 is 0 with a remainder of 20.
Put 0 as the next digit of the answer. 
Result so far: 8279.8
The remainder is 20 after subtracting 0 from 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Advancing to step 9:
If we divide 200 by 21, we get 9 and a remainder of 11.
The number 9 becomes the next digit in our result. 
Result so far: 8279.809
If we subtract 189 from 200, we get 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Going ahead to step 10:
The number 21 fits into 110 5 times, leaving a remainder of 5.
Write down 5 as next digit of the result. 
Result so far: 8279.8095
Subtracting 105 from 110 leaves us with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Advancing to step 11:
When dividing 50 by 21, we get 2 with a remainder of 8.
Put 2 as the next digit of the answer. 
Result so far: 8279.80952
Deduct 42 from 50 and we're left 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.

Step 12:
If we divide 80 by 21, we get 3 and a remainder of 17.
The number 3 becomes the next digit in our result. 
Result so far: 8279.809523
Subtract 63 from 80 to get 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Step 13:
If we divide 170 by 21, we get 8 and a remainder of 2.
Record the quotient 8 as the next digit in the result. 
Result so far: 8279.8095238
If we subtract 168 from 170, we get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

On to step 14:
21 can be fit into 20 0 times, resulting in a remainder of 20.
Write down 0 as next digit of the result. 
Result so far: 8279.8095238
The remainder is 20 after subtracting 0 from 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Our division results in 8279.8095238 with a remaining 2e-08.