21709613 ÷ 842 
Let's see how many times 842 fits into 21709613.

On to step 1:
842 goes into 2 0 times with a remainder of 2.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 2 after subtracting 0 from 2.
Include the next digit (1) from the dividend after 2, then repeat: 21 / 842

Moving on to step 2:
21 divided by 842 is 0 with a remainder of 21.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 21 to get 21.
Fetch the next digit (7) from the dividend, attach it to 21 and continue: 217 / 842

Let's proceed to step 3:
842 goes into 217 0 times with a remainder of 217.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 217 and we're left with 217.
Take the next digit (0) from the dividend and append it to 217, then repeat: 2170 / 842

Let's proceed to step 4:
842 goes into 2170 2 times with a remainder of 486.
The next digit of our result is 2. 
Result so far: 2.0
If we subtract 1684 from 2170, we get 486.
Grab the next digit (9) from the dividend, add it to 486, then carry on: 4869 / 842

Let's proceed to step 5:
842 can be fit into 4869 5 times, resulting in a remainder of 659.
Use 5 as the next digit of our solution. 
Result so far: 25.0
If we subtract 4210 from 4869, we get 659.
Bring next digit (6) of the dividend behind the 659 and repeat the process: 6596 / 842

Going ahead to step 6:
The number 842 fits into 6596 7 times, leaving a remainder of 702.
The next digit of our result is 7. 
Result so far: 257.0
Subtract 5894 from 6596 to get 702.
Append the next digit (1) from the dividend to 702 and continue with: 7021 / 842

Going ahead to step 7:
The number 842 fits into 7021 8 times, leaving a remainder of 285.
Put 8 as the next digit of the answer. 
Result so far: 2578.0
Deduct 6736 from 7021 and we're left with 285.
Grab the next digit (3) from the dividend, add it to 285, then carry on: 2853 / 842

Step 8:
The number 842 fits into 2853 3 times, leaving a remainder of 327.
Put 3 as the next digit of the answer. 
Result so far: 25783.0
If we subtract 2526 from 2853, we get 327.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3270, and continue the process.

Moving on to step 9:
The number 842 fits into 3270 3 times, leaving a remainder of 744.
Write down 3 as next digit of the result. 
Result so far: 25783.3
If we take 2526 away from 3270, we end up with 744.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7440, and continue the process.

Moving on to step 10:
The number 842 fits into 7440 8 times, leaving a remainder of 704.
The number 8 becomes the next digit in our result. 
Result so far: 25783.38
Subtract 6736 from 7440 to get 704.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7040, and continue the process.

Let's proceed to step 11:
The number 842 fits into 7040 8 times, leaving a remainder of 304.
The number 8 becomes the next digit in our result. 
Result so far: 25783.388
If we subtract 6736 from 7040, we get 304.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3040, and continue the process.

The final outcome is 25783.388, with a leftover of 0.0304.