21424348 ÷ 10 
Let's see how many times 10 fits into 21424348.

Moving on to step 1:
The number 10 fits into 2 0 times, leaving a remainder of 2.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 2 leaves us with 2.
Fetch the next digit (1) from the dividend, attach it to 2 and continue: 21 / 10

Going ahead to step 2:
When dividing 21 by 10, we get 2 with a remainder of 1.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
The remainder is 1 after subtracting 20 from 21.
Bring next digit (4) of the dividend behind the 1 and repeat the process: 14 / 10

On to step 3:
When dividing 14 by 10, we get 1 with a remainder of 4.
The number 1 becomes the next digit in our result. 
Result so far: 21.0
Subtracting 10 from 14 leaves us with 4.
Include the next digit (2) from the dividend after 4, then repeat: 42 / 10

Going ahead to step 4:
If we divide 42 by 10, we get 4 and a remainder of 2.
The next digit of our result is 4. 
Result so far: 214.0
The remainder is 2 after subtracting 40 from 42.
Grab the next digit (4) from the dividend, add it to 2, then carry on: 24 / 10

Moving on to step 5:
10 goes into 24 2 times with a remainder of 4.
The next digit of our result is 2. 
Result so far: 2142.0
If we take 20 away from 24, we end up with 4.
Take the next digit (3) from the dividend and append it to 4, then repeat: 43 / 10

Let's proceed to step 6:
If we divide 43 by 10, we get 4 and a remainder of 3.
Put 4 as the next digit of the answer. 
Result so far: 21424.0
If we subtract 40 from 43, we get 3.
Append the next digit (4) from the dividend to 3 and continue with: 34 / 10

Advancing to step 7:
10 goes into 34 3 times with a remainder of 4.
Put 3 as the next digit of the answer. 
Result so far: 214243.0
The remainder is 4 after subtracting 30 from 34.
Fetch the next digit (8) from the dividend, attach it to 4 and continue: 48 / 10

Step 8:
10 goes into 48 4 times with a remainder of 8.
The number 4 becomes the next digit in our result. 
Result so far: 2142434.0
If we subtract 40 from 48, 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.

On to step 9:
10 can be fit into 80 8 times, resulting in a remainder of 0.
The next digit of our result is 8. 
Result so far: 2142434.8
Deduct 80 from 80 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.

Step 10:
10 can be fit into 0 0 times, resulting in a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 2142434.8
Subtracting 0 from 0 leaves us 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.

Moving on to step 11:
If we divide 0 by 10, we get 0 and a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 2142434.8
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.

The quotient of the division is 2142434.8, and the remainder is 0.0.