We're dividing 17241540 by 409 
Let's see how many times 409 fits into 17241540.

Moving on to step 1:
1 divided by 409 is 0 with a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 1 and we're left with 1.
Include the next digit (7) from the dividend after 1, then repeat: 17 / 409

Let's proceed to step 2:
The number 409 fits into 17 0 times, leaving a remainder of 17.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 17, we get 17.
Append the next digit (2) from the dividend to 17 and continue with: 172 / 409

Let's proceed to step 3:
409 goes into 172 0 times with a remainder of 172.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 172 to get 172.
Include the next digit (4) from the dividend after 172, then repeat: 1724 / 409

On to step 4:
1724 divided by 409 is 4 with a remainder of 88.
The number 4 becomes the next digit in our result. 
Result so far: 4.0
Subtracting 1636 from 1724 leaves us with 88.
Take the next digit (1) from the dividend and append it to 88, then repeat: 881 / 409

Moving on to step 5:
If we divide 881 by 409, we get 2 and a remainder of 63.
Put 2 as the next digit of the answer. 
Result so far: 42.0
Subtracting 818 from 881 leaves us with 63.
Take the next digit (5) from the dividend and append it to 63, then repeat: 635 / 409

Step 6:
When dividing 635 by 409, we get 1 with a remainder of 226.
Write down 1 as next digit of the result. 
Result so far: 421.0
If we subtract 409 from 635, we get 226.
Take the next digit (4) from the dividend and append it to 226, then repeat: 2264 / 409

Advancing to step 7:
2264 divided by 409 is 5 with a remainder of 219.
Record the quotient 5 as the next digit in the result. 
Result so far: 4215.0
If we take 2045 away from 2264, we end up with 219.
Append the next digit (0) from the dividend to 219 and continue with: 2190 / 409

Advancing to step 8:
409 goes into 2190 5 times with a remainder of 145.
The next digit of our result is 5. 
Result so far: 42155.0
Subtract 2045 from 2190 to get 145.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1450, and continue the process.

Advancing to step 9:
The number 409 fits into 1450 3 times, leaving a remainder of 223.
Record the quotient 3 as the next digit in the result. 
Result so far: 42155.3
Subtract 1227 from 1450 to get 223.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2230, and continue the process.

Step 10:
409 goes into 2230 5 times with a remainder of 185.
Put 5 as the next digit of the answer. 
Result so far: 42155.35
Subtract 2045 from 2230 to get 185.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1850, and continue the process.

Step 11:
The number 409 fits into 1850 4 times, leaving a remainder of 214.
The next digit of our result is 4. 
Result so far: 42155.354
If we take 1636 away from 1850, we end up with 214.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2140, and continue the process.

Going ahead to step 12:
2140 divided by 409 is 5 with a remainder of 95.
Record the quotient 5 as the next digit in the result. 
Result so far: 42155.3545
If we take 2045 away from 2140, we end up with 95.
Since there are no more digits in the dividend, we add a zero to the remainder making it 950, and continue the process.

Step 13:
When dividing 950 by 409, we get 2 with a remainder of 132.
Use 2 as the next digit of our solution. 
Result so far: 42155.35452
The remainder is 132 after subtracting 818 from 950.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1320, and continue the process.

Moving on to step 14:
When dividing 1320 by 409, we get 3 with a remainder of 93.
The number 3 becomes the next digit in our result. 
Result so far: 42155.354523
Subtract 1227 from 1320 to get 93.
Since there are no more digits in the dividend, we add a zero to the remainder making it 930, and continue the process.

On to step 15:
The number 409 fits into 930 2 times, leaving a remainder of 112.
Write down 2 as next digit of the result. 
Result so far: 42155.3545232
If we subtract 818 from 930, we get 112.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1120, and continue the process.

Moving on to step 16:
If we divide 1120 by 409, we get 2 and a remainder of 302.
Record the quotient 2 as the next digit in the result. 
Result so far: 42155.35452322
Deduct 818 from 1120 and we're left with 302.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3020, and continue the process.

The final outcome is 42155.35452322, with a leftover of 3.02e-07.