We're dividing 16856447 by 648 
We want to figure out the number of times 16856447 can be divided by 648.

Advancing to step 1:
If we divide 1 by 648, we get 0 and a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 1, we end up with 1.
Fetch the next digit (6) from the dividend, attach it to 1 and continue: 16 / 648

Advancing to step 2:
The number 648 fits into 16 0 times, leaving a remainder of 16.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 16 to get 16.
Bring next digit (8) of the dividend behind the 16 and repeat the process: 168 / 648

On to step 3:
If we divide 168 by 648, we get 0 and a remainder of 168.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 168 to get 168.
Include the next digit (5) from the dividend after 168, then repeat: 1685 / 648

Moving on to step 4:
The number 648 fits into 1685 2 times, leaving a remainder of 389.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
Deduct 1296 from 1685 and we're left with 389.
Fetch the next digit (6) from the dividend, attach it to 389 and continue: 3896 / 648

Step 5:
When dividing 3896 by 648, we get 6 with a remainder of 8.
Put 6 as the next digit of the answer. 
Result so far: 26.0
Deduct 3888 from 3896 and we're left with 8.
Fetch the next digit (4) from the dividend, attach it to 8 and continue: 84 / 648

Going ahead to step 6:
84 divided by 648 is 0 with a remainder of 84.
The next digit of our result is 0. 
Result so far: 260.0
Subtract 0 from 84 to get 84.
Fetch the next digit (4) from the dividend, attach it to 84 and continue: 844 / 648

Let's proceed to step 7:
844 divided by 648 is 1 with a remainder of 196.
Put 1 as the next digit of the answer. 
Result so far: 2601.0
If we subtract 648 from 844, we get 196.
Take the next digit (7) from the dividend and append it to 196, then repeat: 1967 / 648

Going ahead to step 8:
648 can be fit into 1967 3 times, resulting in a remainder of 23.
The number 3 becomes the next digit in our result. 
Result so far: 26013.0
If we take 1944 away from 1967, we end up with 23.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

Advancing to step 9:
230 divided by 648 is 0 with a remainder of 230.
Write down 0 as next digit of the result. 
Result so far: 26013.0
If we subtract 0 from 230, we get 230.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2300, and continue the process.

Advancing to step 10:
648 goes into 2300 3 times with a remainder of 356.
The next digit of our result is 3. 
Result so far: 26013.03
The remainder is 356 after subtracting 1944 from 2300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3560, and continue the process.

On to step 11:
The number 648 fits into 3560 5 times, leaving a remainder of 320.
The next digit of our result is 5. 
Result so far: 26013.035
If we take 3240 away from 3560, we end up with 320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3200, and continue the process.

Going ahead to step 12:
648 can be fit into 3200 4 times, resulting in a remainder of 608.
Use 4 as the next digit of our solution. 
Result so far: 26013.0354
Deduct 2592 from 3200 and we're left with 608.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6080, and continue the process.

Moving on to step 13:
6080 divided by 648 is 9 with a remainder of 248.
Use 9 as the next digit of our solution. 
Result so far: 26013.03549
If we take 5832 away from 6080, we end up with 248.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2480, and continue the process.

Advancing to step 14:
2480 divided by 648 is 3 with a remainder of 536.
The next digit of our result is 3. 
Result so far: 26013.035493
If we subtract 1944 from 2480, we get 536.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5360, and continue the process.

Moving on to step 15:
When dividing 5360 by 648, we get 8 with a remainder of 176.
The next digit of our result is 8. 
Result so far: 26013.0354938
Deduct 5184 from 5360 and we're left with 176.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1760, and continue the process.

Step 16:
The number 648 fits into 1760 2 times, leaving a remainder of 464.
Put 2 as the next digit of the answer. 
Result so far: 26013.03549382
If we subtract 1296 from 1760, we get 464.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4640, and continue the process.

The final result is 26013.03549382 with a remainder of 4.64e-07.