We're dividing 16549994 by 405 
We're looking to find how many times 405 goes into 16549994.

On to step 1:
If we divide 1 by 405, we get 0 and a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 1 after subtracting 0 from 1.
Append the next digit (6) from the dividend to 1 and continue with: 16 / 405

Advancing to step 2:
If we divide 16 by 405, we get 0 and a remainder of 16.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 16, we get 16.
Append the next digit (5) from the dividend to 16 and continue with: 165 / 405

Advancing to step 3:
If we divide 165 by 405, we get 0 and a remainder of 165.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 165, we get 165.
Bring next digit (4) of the dividend behind the 165 and repeat the process: 1654 / 405

Going ahead to step 4:
If we divide 1654 by 405, we get 4 and a remainder of 34.
The next digit of our result is 4. 
Result so far: 4.0
Deduct 1620 from 1654 and we're left with 34.
Bring next digit (9) of the dividend behind the 34 and repeat the process: 349 / 405

On to step 5:
405 can be fit into 349 0 times, resulting in a remainder of 349.
The next digit of our result is 0. 
Result so far: 40.0
Deduct 0 from 349 and we're left with 349.
Bring next digit (9) of the dividend behind the 349 and repeat the process: 3499 / 405

Going ahead to step 6:
The number 405 fits into 3499 8 times, leaving a remainder of 259.
The number 8 becomes the next digit in our result. 
Result so far: 408.0
Subtract 3240 from 3499 to get 259.
Take the next digit (9) from the dividend and append it to 259, then repeat: 2599 / 405

Going ahead to step 7:
If we divide 2599 by 405, we get 6 and a remainder of 169.
Put 6 as the next digit of the answer. 
Result so far: 4086.0
Deduct 2430 from 2599 and we're left with 169.
Grab the next digit (4) from the dividend, add it to 169, then carry on: 1694 / 405

Advancing to step 8:
405 goes into 1694 4 times with a remainder of 74.
Write down 4 as next digit of the result. 
Result so far: 40864.0
Subtracting 1620 from 1694 leaves us with 74.
Since there are no more digits in the dividend, we add a zero to the remainder making it 740, and continue the process.

Step 9:
If we divide 740 by 405, we get 1 and a remainder of 335.
Write down 1 as next digit of the result. 
Result so far: 40864.1
Subtracting 405 from 740 leaves us with 335.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3350, and continue the process.

Step 10:
3350 divided by 405 is 8 with a remainder of 110.
Write down 8 as next digit of the result. 
Result so far: 40864.18
If we subtract 3240 from 3350, we get 110.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1100, and continue the process.

Advancing to step 11:
The number 405 fits into 1100 2 times, leaving a remainder of 290.
Put 2 as the next digit of the answer. 
Result so far: 40864.182
The remainder is 290 after subtracting 810 from 1100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2900, and continue the process.

On to step 12:
If we divide 2900 by 405, we get 7 and a remainder of 65.
Record the quotient 7 as the next digit in the result. 
Result so far: 40864.1827
Deduct 2835 from 2900 and we're left with 65.
Since there are no more digits in the dividend, we add a zero to the remainder making it 650, and continue the process.

Advancing to step 13:
The number 405 fits into 650 1 times, leaving a remainder of 245.
Put 1 as the next digit of the answer. 
Result so far: 40864.18271
If we take 405 away from 650, we end up with 245.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2450, and continue the process.

Let's proceed to step 14:
The number 405 fits into 2450 6 times, leaving a remainder of 20.
Put 6 as the next digit of the answer. 
Result so far: 40864.182716
Subtract 2430 from 2450 to get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Moving on to step 15:
If we divide 200 by 405, we get 0 and a remainder of 200.
The number 0 becomes the next digit in our result. 
Result so far: 40864.182716
The remainder is 200 after subtracting 0 from 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2000, and continue the process.

Going ahead to step 16:
405 goes into 2000 4 times with a remainder of 380.
Write down 4 as next digit of the result. 
Result so far: 40864.18271604
If we take 1620 away from 2000, we end up with 380.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3800, and continue the process.

After the division, we end up with 40864.18271604 and a remainder of 3.8e-07.