16397649 ÷ 549 
We want to figure out the number of times 16397649 can be divided by 549.

On to step 1:
The number 549 fits into 1 0 times, leaving a remainder of 1.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 1, we end up with 1.
Take the next digit (6) from the dividend and append it to 1, then repeat: 16 / 549

On to step 2:
If we divide 16 by 549, we get 0 and a remainder of 16.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 16 and we're left with 16.
Bring next digit (3) of the dividend behind the 16 and repeat the process: 163 / 549

Let's proceed to step 3:
The number 549 fits into 163 0 times, leaving a remainder of 163.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 163 and we're left with 163.
Include the next digit (9) from the dividend after 163, then repeat: 1639 / 549

Advancing to step 4:
If we divide 1639 by 549, we get 2 and a remainder of 541.
The next digit of our result is 2. 
Result so far: 2.0
If we subtract 1098 from 1639, we get 541.
Take the next digit (7) from the dividend and append it to 541, then repeat: 5417 / 549

Moving on to step 5:
549 goes into 5417 9 times with a remainder of 476.
Put 9 as the next digit of the answer. 
Result so far: 29.0
Subtract 4941 from 5417 to get 476.
Fetch the next digit (6) from the dividend, attach it to 476 and continue: 4766 / 549

On to step 6:
4766 divided by 549 is 8 with a remainder of 374.
The number 8 becomes the next digit in our result. 
Result so far: 298.0
Subtract 4392 from 4766 to get 374.
Fetch the next digit (4) from the dividend, attach it to 374 and continue: 3744 / 549

On to step 7:
549 goes into 3744 6 times with a remainder of 450.
Use 6 as the next digit of our solution. 
Result so far: 2986.0
Deduct 3294 from 3744 and we're left with 450.
Fetch the next digit (9) from the dividend, attach it to 450 and continue: 4509 / 549

On to step 8:
549 goes into 4509 8 times with a remainder of 117.
Write down 8 as next digit of the result. 
Result so far: 29868.0
Deduct 4392 from 4509 and we're left with 117.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1170, and continue the process.

Going ahead to step 9:
When dividing 1170 by 549, we get 2 with a remainder of 72.
Record the quotient 2 as the next digit in the result. 
Result so far: 29868.2
The remainder is 72 after subtracting 1098 from 1170.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

Advancing to step 10:
The number 549 fits into 720 1 times, leaving a remainder of 171.
The next digit of our result is 1. 
Result so far: 29868.21
Deduct 549 from 720 and we're left with 171.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1710, and continue the process.

On to step 11:
The number 549 fits into 1710 3 times, leaving a remainder of 63.
The number 3 becomes the next digit in our result. 
Result so far: 29868.213
If we subtract 1647 from 1710, we get 63.
Since there are no more digits in the dividend, we add a zero to the remainder making it 630, and continue the process.

Going ahead to step 12:
When dividing 630 by 549, we get 1 with a remainder of 81.
Use 1 as the next digit of our solution. 
Result so far: 29868.2131
If we take 549 away from 630, we end up with 81.
Since there are no more digits in the dividend, we add a zero to the remainder making it 810, and continue the process.

Moving on to step 13:
The number 549 fits into 810 1 times, leaving a remainder of 261.
Write down 1 as next digit of the result. 
Result so far: 29868.21311
Deduct 549 from 810 and we're left with 261.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2610, and continue the process.

Our division results in 29868.21311 with a remaining 0.000261.