344383 ÷ 21 
We want to figure out the number of times 344383 can be divided by 21.

Advancing to step 1:
When dividing 3 by 21, we get 0 with a remainder of 3.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 3 to get 3.
Append the next digit (4) from the dividend to 3 and continue with: 34 / 21

Step 2:
21 can be fit into 34 1 times, resulting in a remainder of 13.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Subtract 21 from 34 to get 13.
Grab the next digit (4) from the dividend, add it to 13, then carry on: 134 / 21

On to step 3:
21 goes into 134 6 times with a remainder of 8.
Use 6 as the next digit of our solution. 
Result so far: 16.0
Subtracting 126 from 134 leaves us with 8.
Bring next digit (3) of the dividend behind the 8 and repeat the process: 83 / 21

On to step 4:
21 goes into 83 3 times with a remainder of 20.
The number 3 becomes the next digit in our result. 
Result so far: 163.0
If we subtract 63 from 83, we get 20.
Bring next digit (8) of the dividend behind the 20 and repeat the process: 208 / 21

Moving on to step 5:
21 goes into 208 9 times with a remainder of 19.
Record the quotient 9 as the next digit in the result. 
Result so far: 1639.0
Deduct 189 from 208 and we're left with 19.
Bring next digit (3) of the dividend behind the 19 and repeat the process: 193 / 21

Going ahead to step 6:
21 goes into 193 9 times with a remainder of 4.
Write down 9 as next digit of the result. 
Result so far: 16399.0
The remainder is 4 after subtracting 189 from 193.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Step 7:
40 divided by 21 is 1 with a remainder of 19.
Write down 1 as next digit of the result. 
Result so far: 16399.1
The remainder is 19 after subtracting 21 from 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Let's proceed to step 8:
21 goes into 190 9 times with a remainder of 1.
Put 9 as the next digit of the answer. 
Result so far: 16399.19
Subtract 189 from 190 to get 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Moving on to step 9:
The number 21 fits into 10 0 times, leaving a remainder of 10.
The next digit of our result is 0. 
Result so far: 16399.19
Subtracting 0 from 10 leaves us with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Advancing to step 10:
The number 21 fits into 100 4 times, leaving a remainder of 16.
Write down 4 as next digit of the result. 
Result so far: 16399.1904
Subtract 84 from 100 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.

Advancing to step 11:
The number 21 fits into 160 7 times, leaving a remainder of 13.
Put 7 as the next digit of the answer. 
Result so far: 16399.19047
Subtracting 147 from 160 leaves us with 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Advancing to step 12:
21 can be fit into 130 6 times, resulting in a remainder of 4.
Put 6 as the next digit of the answer. 
Result so far: 16399.190476
Deduct 126 from 130 and we're left 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.

On to step 13:
21 goes into 40 1 times with a remainder of 19.
Write down 1 as next digit of the result. 
Result so far: 16399.1904761
If we subtract 21 from 40, we 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 14:
The number 21 fits into 190 9 times, leaving a remainder of 1.
Record the quotient 9 as the next digit in the result. 
Result so far: 16399.19047619
The remainder is 1 after subtracting 189 from 190.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

In conclusion, the division gives 16399.19047619 with a balance of 1e-09.