21966125 divided by 16 
We're looking to find how many times 16 goes into 21966125.

Step 1:
2 divided by 16 is 0 with a remainder of 2.
The number 0 becomes the next digit in our 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 / 16

Advancing to step 2:
The number 16 fits into 21 1 times, leaving a remainder of 5.
Put 1 as the next digit of the answer. 
Result so far: 1.0
If we take 16 away from 21, we end up with 5.
Bring next digit (9) of the dividend behind the 5 and repeat the process: 59 / 16

Advancing to step 3:
59 divided by 16 is 3 with a remainder of 11.
Use 3 as the next digit of our solution. 
Result so far: 13.0
Subtracting 48 from 59 leaves us with 11.
Include the next digit (6) from the dividend after 11, then repeat: 116 / 16

Going ahead to step 4:
If we divide 116 by 16, we get 7 and a remainder of 4.
The next digit of our result is 7. 
Result so far: 137.0
If we subtract 112 from 116, we get 4.
Fetch the next digit (6) from the dividend, attach it to 4 and continue: 46 / 16

On to step 5:
16 goes into 46 2 times with a remainder of 14.
Use 2 as the next digit of our solution. 
Result so far: 1372.0
Subtract 32 from 46 to get 14.
Bring next digit (1) of the dividend behind the 14 and repeat the process: 141 / 16

Step 6:
The number 16 fits into 141 8 times, leaving a remainder of 13.
Put 8 as the next digit of the answer. 
Result so far: 13728.0
If we subtract 128 from 141, we get 13.
Grab the next digit (2) from the dividend, add it to 13, then carry on: 132 / 16

On to step 7:
If we divide 132 by 16, we get 8 and a remainder of 4.
Use 8 as the next digit of our solution. 
Result so far: 137288.0
The remainder is 4 after subtracting 128 from 132.
Bring next digit (5) of the dividend behind the 4 and repeat the process: 45 / 16

Let's proceed to step 8:
16 goes into 45 2 times with a remainder of 13.
Write down 2 as next digit of the result. 
Result so far: 1372882.0
Subtracting 32 from 45 leaves us with 13.
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 9:
The number 16 fits into 130 8 times, leaving a remainder of 2.
Put 8 as the next digit of the answer. 
Result so far: 1372882.8
Subtracting 128 from 130 leaves us with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Advancing to step 10:
16 goes into 20 1 times with a remainder of 4.
Put 1 as the next digit of the answer. 
Result so far: 1372882.81
If we subtract 16 from 20, we 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.

Step 11:
40 divided by 16 is 2 with a remainder of 8.
Record the quotient 2 as the next digit in the result. 
Result so far: 1372882.812
Deduct 32 from 40 and we're left with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Step 12:
80 divided by 16 is 5 with a remainder of 0.
The number 5 becomes the next digit in our result. 
Result so far: 1372882.8125
If we take 80 away from 80, 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.

Moving on to step 13:
The number 16 fits into 0 0 times, leaving a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 1372882.8125
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.

Advancing to step 14:
16 goes into 0 0 times with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 1372882.8125
Subtract 0 from 0 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.

The quotient of the division is 1372882.8125, and the remainder is 0.0.