We're dividing 15549249 by 435 
Our goal is to divide 15549249 by 435.

On to step 1:
When dividing 1 by 435, we get 0 with a remainder of 1.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 1, we get 1.
Append the next digit (5) from the dividend to 1 and continue with: 15 / 435

Going ahead to step 2:
If we divide 15 by 435, we get 0 and a remainder of 15.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 15, we end up with 15.
Fetch the next digit (5) from the dividend, attach it to 15 and continue: 155 / 435

Let's proceed to step 3:
435 goes into 155 0 times with a remainder of 155.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 155 to get 155.
Grab the next digit (4) from the dividend, add it to 155, then carry on: 1554 / 435

On to step 4:
435 can be fit into 1554 3 times, resulting in a remainder of 249.
The next digit of our result is 3. 
Result so far: 3.0
Subtracting 1305 from 1554 leaves us with 249.
Append the next digit (9) from the dividend to 249 and continue with: 2499 / 435

Advancing to step 5:
2499 divided by 435 is 5 with a remainder of 324.
Put 5 as the next digit of the answer. 
Result so far: 35.0
If we take 2175 away from 2499, we end up with 324.
Grab the next digit (2) from the dividend, add it to 324, then carry on: 3242 / 435

Let's proceed to step 6:
435 can be fit into 3242 7 times, resulting in a remainder of 197.
Record the quotient 7 as the next digit in the result. 
Result so far: 357.0
Subtract 3045 from 3242 to get 197.
Grab the next digit (4) from the dividend, add it to 197, then carry on: 1974 / 435

Going ahead to step 7:
The number 435 fits into 1974 4 times, leaving a remainder of 234.
The next digit of our result is 4. 
Result so far: 3574.0
Subtract 1740 from 1974 to get 234.
Bring next digit (9) of the dividend behind the 234 and repeat the process: 2349 / 435

Step 8:
435 can be fit into 2349 5 times, resulting in a remainder of 174.
Put 5 as the next digit of the answer. 
Result so far: 35745.0
Deduct 2175 from 2349 and we're left with 174.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1740, and continue the process.

On to step 9:
435 goes into 1740 4 times with a remainder of 0.
Record the quotient 4 as the next digit in the result. 
Result so far: 35745.4
If we take 1740 away from 1740, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Going ahead to step 10:
The number 435 fits into 0 0 times, leaving a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 35745.4
Deduct 0 from 0 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Going ahead to step 11:
When dividing 0 by 435, we get 0 with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 35745.4
Deduct 0 from 0 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Our division results in 35745.4 with a remaining 0.0.