21369383 ÷ 916 
We want to figure out the number of times 21369383 can be divided by 916.

On to step 1:
The number 916 fits into 2 0 times, leaving a remainder of 2.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 2, we end up with 2.
Include the next digit (1) from the dividend after 2, then repeat: 21 / 916

Moving on to step 2:
916 goes into 21 0 times with a remainder of 21.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 21, we end up with 21.
Include the next digit (3) from the dividend after 21, then repeat: 213 / 916

Let's proceed to step 3:
916 goes into 213 0 times with a remainder of 213.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 213, we get 213.
Grab the next digit (6) from the dividend, add it to 213, then carry on: 2136 / 916

On to step 4:
916 can be fit into 2136 2 times, resulting in a remainder of 304.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
Subtracting 1832 from 2136 leaves us with 304.
Include the next digit (9) from the dividend after 304, then repeat: 3049 / 916

Let's proceed to step 5:
916 can be fit into 3049 3 times, resulting in a remainder of 301.
The number 3 becomes the next digit in our result. 
Result so far: 23.0
Deduct 2748 from 3049 and we're left with 301.
Fetch the next digit (3) from the dividend, attach it to 301 and continue: 3013 / 916

On to step 6:
916 goes into 3013 3 times with a remainder of 265.
Record the quotient 3 as the next digit in the result. 
Result so far: 233.0
If we subtract 2748 from 3013, we get 265.
Fetch the next digit (8) from the dividend, attach it to 265 and continue: 2658 / 916

Step 7:
916 goes into 2658 2 times with a remainder of 826.
Use 2 as the next digit of our solution. 
Result so far: 2332.0
If we take 1832 away from 2658, we end up with 826.
Bring next digit (3) of the dividend behind the 826 and repeat the process: 8263 / 916

Step 8:
The number 916 fits into 8263 9 times, leaving a remainder of 19.
Use 9 as the next digit of our solution. 
Result so far: 23329.0
The remainder is 19 after subtracting 8244 from 8263.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Advancing to step 9:
The number 916 fits into 190 0 times, leaving a remainder of 190.
Record the quotient 0 as the next digit in the result. 
Result so far: 23329.0
Deduct 0 from 190 and we're left with 190.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1900, and continue the process.

Advancing to step 10:
916 goes into 1900 2 times with a remainder of 68.
The next digit of our result is 2. 
Result so far: 23329.02
If we take 1832 away from 1900, we end up with 68.
Since there are no more digits in the dividend, we add a zero to the remainder making it 680, and continue the process.

Going ahead to step 11:
If we divide 680 by 916, we get 0 and a remainder of 680.
Write down 0 as next digit of the result. 
Result so far: 23329.02
Deduct 0 from 680 and we're left with 680.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6800, and continue the process.

Advancing to step 12:
6800 divided by 916 is 7 with a remainder of 388.
Write down 7 as next digit of the result. 
Result so far: 23329.0207
The remainder is 388 after subtracting 6412 from 6800.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3880, and continue the process.

Going ahead to step 13:
916 goes into 3880 4 times with a remainder of 216.
Record the quotient 4 as the next digit in the result. 
Result so far: 23329.02074
Subtract 3664 from 3880 to get 216.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2160, and continue the process.

Going ahead to step 14:
The number 916 fits into 2160 2 times, leaving a remainder of 328.
Use 2 as the next digit of our solution. 
Result so far: 23329.020742
The remainder is 328 after subtracting 1832 from 2160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3280, and continue the process.

Let's proceed to step 15:
916 goes into 3280 3 times with a remainder of 532.
Write down 3 as next digit of the result. 
Result so far: 23329.0207423
The remainder is 532 after subtracting 2748 from 3280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5320, and continue the process.

Step 16:
When dividing 5320 by 916, we get 5 with a remainder of 740.
The number 5 becomes the next digit in our result. 
Result so far: 23329.02074235
Subtract 4580 from 5320 to get 740.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7400, and continue the process.

The final outcome is 23329.02074235, with a leftover of 7.4e-07.