We look at the division of 21439915 by 14 
We want to divide 21439915 by 14.

Step 1:
If we divide 2 by 14, we get 0 and a remainder of 2.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 2 leaves us with 2.
Append the next digit (1) from the dividend to 2 and continue with: 21 / 14

Let's proceed to step 2:
21 divided by 14 is 1 with a remainder of 7.
Write down 1 as next digit of the result. 
Result so far: 1.0
If we take 14 away from 21, we end up with 7.
Append the next digit (4) from the dividend to 7 and continue with: 74 / 14

Going ahead to step 3:
If we divide 74 by 14, we get 5 and a remainder of 4.
Write down 5 as next digit of the result. 
Result so far: 15.0
Subtract 70 from 74 to get 4.
Grab the next digit (3) from the dividend, add it to 4, then carry on: 43 / 14

Going ahead to step 4:
The number 14 fits into 43 3 times, leaving a remainder of 1.
Write down 3 as next digit of the result. 
Result so far: 153.0
Subtract 42 from 43 to get 1.
Grab the next digit (9) from the dividend, add it to 1, then carry on: 19 / 14

Moving on to step 5:
If we divide 19 by 14, we get 1 and a remainder of 5.
Use 1 as the next digit of our solution. 
Result so far: 1531.0
If we take 14 away from 19, we end up with 5.
Bring next digit (9) of the dividend behind the 5 and repeat the process: 59 / 14

Moving on to step 6:
The number 14 fits into 59 4 times, leaving a remainder of 3.
Put 4 as the next digit of the answer. 
Result so far: 15314.0
Subtracting 56 from 59 leaves us with 3.
Take the next digit (1) from the dividend and append it to 3, then repeat: 31 / 14

Going ahead to step 7:
If we divide 31 by 14, we get 2 and a remainder of 3.
Use 2 as the next digit of our solution. 
Result so far: 153142.0
The remainder is 3 after subtracting 28 from 31.
Grab the next digit (5) from the dividend, add it to 3, then carry on: 35 / 14

Let's proceed to step 8:
If we divide 35 by 14, we get 2 and a remainder of 7.
Use 2 as the next digit of our solution. 
Result so far: 1531422.0
If we subtract 28 from 35, we 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.

Advancing to step 9:
If we divide 70 by 14, we get 5 and a remainder of 0.
Write down 5 as next digit of the result. 
Result so far: 1531422.5
Subtract 70 from 70 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Going ahead to step 10:
When dividing 0 by 14, we get 0 with a remainder of 0.
The next digit of our result is 0. 
Result so far: 1531422.5
If we take 0 away from 0, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Advancing to step 11:
14 can be fit into 0 0 times, resulting in a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 1531422.5
Deduct 0 from 0 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The final result is 1531422.5 with a remainder of 0.0.