We divide 16902257 by 405
We want to figure out the number of times 16902257 can be divided by 405.

Step 1:
405 can be fit into 1 0 times, resulting in a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 1 leaves us with 1.
Include the next digit (6) from the dividend after 1, then repeat: 16 / 405

Going ahead to step 2:
When dividing 16 by 405, we get 0 with a remainder of 16.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 16 to get 16.
Append the next digit (9) from the dividend to 16 and continue with: 169 / 405

Advancing to step 3:
When dividing 169 by 405, we get 0 with a remainder of 169.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 169 and we're left with 169.
Include the next digit (0) from the dividend after 169, then repeat: 1690 / 405

Going ahead to step 4:
1690 divided by 405 is 4 with a remainder of 70.
The next digit of our result is 4. 
Result so far: 4.0
Subtracting 1620 from 1690 leaves us with 70.
Append the next digit (2) from the dividend to 70 and continue with: 702 / 405

Step 5:
The number 405 fits into 702 1 times, leaving a remainder of 297.
Put 1 as the next digit of the answer. 
Result so far: 41.0
Deduct 405 from 702 and we're left with 297.
Grab the next digit (2) from the dividend, add it to 297, then carry on: 2972 / 405

Let's proceed to step 6:
When dividing 2972 by 405, we get 7 with a remainder of 137.
The next digit of our result is 7. 
Result so far: 417.0
Subtract 2835 from 2972 to get 137.
Append the next digit (5) from the dividend to 137 and continue with: 1375 / 405

Going ahead to step 7:
405 goes into 1375 3 times with a remainder of 160.
Use 3 as the next digit of our solution. 
Result so far: 4173.0
If we subtract 1215 from 1375, we get 160.
Fetch the next digit (7) from the dividend, attach it to 160 and continue: 1607 / 405

Step 8:
1607 divided by 405 is 3 with a remainder of 392.
Record the quotient 3 as the next digit in the result. 
Result so far: 41733.0
Subtracting 1215 from 1607 leaves us with 392.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3920, and continue the process.

Let's proceed to step 9:
3920 divided by 405 is 9 with a remainder of 275.
The number 9 becomes the next digit in our result. 
Result so far: 41733.9
If we take 3645 away from 3920, we end up with 275.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2750, and continue the process.

On to step 10:
When dividing 2750 by 405, we get 6 with a remainder of 320.
Write down 6 as next digit of the result. 
Result so far: 41733.96
If we take 2430 away from 2750, 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 11:
405 can be fit into 3200 7 times, resulting in a remainder of 365.
Put 7 as the next digit of the answer. 
Result so far: 41733.967
Subtracting 2835 from 3200 leaves us with 365.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3650, and continue the process.

Going ahead to step 12:
When dividing 3650 by 405, we get 9 with a remainder of 5.
Put 9 as the next digit of the answer. 
Result so far: 41733.9679
Subtracting 3645 from 3650 leaves us with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Moving on to step 13:
If we divide 50 by 405, we get 0 and a remainder of 50.
Put 0 as the next digit of the answer. 
Result so far: 41733.9679
Deduct 0 from 50 and we're left with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

On to step 14:
If we divide 500 by 405, we get 1 and a remainder of 95.
The number 1 becomes the next digit in our result. 
Result so far: 41733.967901
The remainder is 95 after subtracting 405 from 500.
Since there are no more digits in the dividend, we add a zero to the remainder making it 950, and continue the process.

Step 15:
950 divided by 405 is 2 with a remainder of 140.
Write down 2 as next digit of the result. 
Result so far: 41733.9679012
The remainder is 140 after subtracting 810 from 950.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1400, and continue the process.

On to step 16:
405 goes into 1400 3 times with a remainder of 185.
The next digit of our result is 3. 
Result so far: 41733.96790123
Subtracting 1215 from 1400 leaves us with 185.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1850, and continue the process.

In conclusion, the division gives 41733.96790123 with a balance of 1.85e-07.