We divide 344287 by 21
We want to figure out the number of times 344287 can be divided by 21.

Let's proceed to step 1:
If we divide 3 by 21, we get 0 and a remainder of 3.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 3, we get 3.
Include the next digit (4) from the dividend after 3, then repeat: 34 / 21

Moving on to step 2:
21 goes into 34 1 times with a remainder of 13.
Write down 1 as next digit of the result. 
Result so far: 1.0
Subtract 21 from 34 to get 13.
Include the next digit (4) from the dividend after 13, then repeat: 134 / 21

On to step 3:
134 divided by 21 is 6 with a remainder of 8.
Use 6 as the next digit of our solution. 
Result so far: 16.0
If we take 126 away from 134, we end up with 8.
Include the next digit (2) from the dividend after 8, then repeat: 82 / 21

Let's proceed to step 4:
21 can be fit into 82 3 times, resulting in a remainder of 19.
Use 3 as the next digit of our solution. 
Result so far: 163.0
Subtracting 63 from 82 leaves us with 19.
Take the next digit (8) from the dividend and append it to 19, then repeat: 198 / 21

Moving on to step 5:
If we divide 198 by 21, we get 9 and a remainder of 9.
Record the quotient 9 as the next digit in the result. 
Result so far: 1639.0
Subtracting 189 from 198 leaves us with 9.
Append the next digit (7) from the dividend to 9 and continue with: 97 / 21

Step 6:
21 can be fit into 97 4 times, resulting in a remainder of 13.
The number 4 becomes the next digit in our result. 
Result so far: 16394.0
Subtract 84 from 97 to get 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Going ahead to step 7:
When dividing 130 by 21, we get 6 with a remainder of 4.
Write down 6 as next digit of the result. 
Result so far: 16394.6
Subtract 126 from 130 to get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Advancing to step 8:
21 can be fit into 40 1 times, resulting in a remainder of 19.
Write down 1 as next digit of the result. 
Result so far: 16394.61
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 9:
When dividing 190 by 21, we get 9 with a remainder of 1.
Use 9 as the next digit of our solution. 
Result so far: 16394.619
Subtracting 189 from 190 leaves us with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

On to step 10:
21 goes into 10 0 times with a remainder of 10.
The number 0 becomes the next digit in our result. 
Result so far: 16394.619
Subtract 0 from 10 to get 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 11:
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: 16394.61904
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.

On to step 12:
When dividing 160 by 21, we get 7 with a remainder of 13.
The next digit of our result is 7. 
Result so far: 16394.619047
The remainder is 13 after subtracting 147 from 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Let's proceed to step 13:
If we divide 130 by 21, we get 6 and a remainder of 4.
Write down 6 as next digit of the result. 
Result so far: 16394.6190476
If we take 126 away from 130, 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.

On to step 14:
If we divide 40 by 21, we get 1 and a remainder of 19.
Record the quotient 1 as the next digit in the result. 
Result so far: 16394.61904761
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.

Our division results in 16394.61904761 with a remaining 1.9e-08.