We're dividing 176399 by 21 
Let's see how many times 21 fits into 176399.

Let's proceed to step 1:
If we divide 1 by 21, we get 0 and a remainder of 1.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 1 after subtracting 0 from 1.
Append the next digit (7) from the dividend to 1 and continue with: 17 / 21

Let's proceed to step 2:
When dividing 17 by 21, we get 0 with a remainder of 17.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 17, we get 17.
Include the next digit (6) from the dividend after 17, then repeat: 176 / 21

Going ahead to step 3:
When dividing 176 by 21, we get 8 with a remainder of 8.
Write down 8 as next digit of the result. 
Result so far: 8.0
Deduct 168 from 176 and we're left with 8.
Take the next digit (3) from the dividend and append it to 8, then repeat: 83 / 21

Step 4:
If we divide 83 by 21, we get 3 and a remainder of 20.
The number 3 becomes the next digit in our result. 
Result so far: 83.0
The remainder is 20 after subtracting 63 from 83.
Fetch the next digit (9) from the dividend, attach it to 20 and continue: 209 / 21

Step 5:
21 goes into 209 9 times with a remainder of 20.
The next digit of our result is 9. 
Result so far: 839.0
If we take 189 away from 209, we end up with 20.
Fetch the next digit (9) from the dividend, attach it to 20 and continue: 209 / 21

Let's proceed to step 6:
21 can be fit into 209 9 times, resulting in a remainder of 20.
Put 9 as the next digit of the answer. 
Result so far: 8399.0
If we subtract 189 from 209, we get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Let's proceed to step 7:
The number 21 fits into 200 9 times, leaving a remainder of 11.
The number 9 becomes the next digit in our result. 
Result so far: 8399.9
If we take 189 away from 200, we end up with 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Let's proceed to step 8:
21 can be fit into 110 5 times, resulting in a remainder of 5.
Put 5 as the next digit of the answer. 
Result so far: 8399.95
If we subtract 105 from 110, we get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Let's proceed to step 9:
21 can be fit into 50 2 times, resulting in a remainder of 8.
The number 2 becomes the next digit in our result. 
Result so far: 8399.952
If we subtract 42 from 50, we get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Let's proceed to step 10:
When dividing 80 by 21, we get 3 with a remainder of 17.
Use 3 as the next digit of our solution. 
Result so far: 8399.9523
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.

Going ahead to step 11:
The number 21 fits into 170 8 times, leaving a remainder of 2.
The next digit of our result is 8. 
Result so far: 8399.95238
If we take 168 away from 170, we end up 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 12:
When dividing 20 by 21, we get 0 with a remainder of 20.
Record the quotient 0 as the next digit in the result. 
Result so far: 8399.95238
If we take 0 away from 20, we end up with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Going ahead to step 13:
When dividing 200 by 21, we get 9 with a remainder of 11.
The number 9 becomes the next digit in our result. 
Result so far: 8399.9523809
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.

Moving on to step 14:
21 can be fit into 110 5 times, resulting in a remainder of 5.
Use 5 as the next digit of our solution. 
Result so far: 8399.95238095
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.

The final result is 8399.95238095 with a remainder of 5e-09.