Let's divide 18561173 by 409
Our goal is to divide 18561173 by 409.

Advancing to step 1:
The number 409 fits into 1 0 times, leaving a remainder of 1.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 1 and we're left with 1.
Fetch the next digit (8) from the dividend, attach it to 1 and continue: 18 / 409

Advancing to step 2:
When dividing 18 by 409, we get 0 with a remainder of 18.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 18, we end up with 18.
Append the next digit (5) from the dividend to 18 and continue with: 185 / 409

Step 3:
185 divided by 409 is 0 with a remainder of 185.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 185 leaves us with 185.
Include the next digit (6) from the dividend after 185, then repeat: 1856 / 409

Step 4:
If we divide 1856 by 409, we get 4 and a remainder of 220.
The next digit of our result is 4. 
Result so far: 4.0
If we subtract 1636 from 1856, we get 220.
Fetch the next digit (1) from the dividend, attach it to 220 and continue: 2201 / 409

Moving on to step 5:
When dividing 2201 by 409, we get 5 with a remainder of 156.
Record the quotient 5 as the next digit in the result. 
Result so far: 45.0
Deduct 2045 from 2201 and we're left with 156.
Bring next digit (1) of the dividend behind the 156 and repeat the process: 1561 / 409

On to step 6:
409 can be fit into 1561 3 times, resulting in a remainder of 334.
Put 3 as the next digit of the answer. 
Result so far: 453.0
If we subtract 1227 from 1561, we get 334.
Bring next digit (7) of the dividend behind the 334 and repeat the process: 3347 / 409

Going ahead to step 7:
The number 409 fits into 3347 8 times, leaving a remainder of 75.
Use 8 as the next digit of our solution. 
Result so far: 4538.0
The remainder is 75 after subtracting 3272 from 3347.
Append the next digit (3) from the dividend to 75 and continue with: 753 / 409

Step 8:
409 goes into 753 1 times with a remainder of 344.
The number 1 becomes the next digit in our result. 
Result so far: 45381.0
Deduct 409 from 753 and we're left with 344.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3440, and continue the process.

Let's proceed to step 9:
If we divide 3440 by 409, we get 8 and a remainder of 168.
Record the quotient 8 as the next digit in the result. 
Result so far: 45381.8
If we take 3272 away from 3440, we end up with 168.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1680, and continue the process.

Moving on to step 10:
The number 409 fits into 1680 4 times, leaving a remainder of 44.
The number 4 becomes the next digit in our result. 
Result so far: 45381.84
The remainder is 44 after subtracting 1636 from 1680.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

Advancing to step 11:
440 divided by 409 is 1 with a remainder of 31.
The number 1 becomes the next digit in our result. 
Result so far: 45381.841
The remainder is 31 after subtracting 409 from 440.
Since there are no more digits in the dividend, we add a zero to the remainder making it 310, and continue the process.

Going ahead to step 12:
When dividing 310 by 409, we get 0 with a remainder of 310.
Put 0 as the next digit of the answer. 
Result so far: 45381.841
Deduct 0 from 310 and we're left with 310.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3100, and continue the process.

On to step 13:
409 can be fit into 3100 7 times, resulting in a remainder of 237.
Use 7 as the next digit of our solution. 
Result so far: 45381.84107
If we subtract 2863 from 3100, we get 237.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2370, and continue the process.

Step 14:
The number 409 fits into 2370 5 times, leaving a remainder of 325.
Record the quotient 5 as the next digit in the result. 
Result so far: 45381.841075
If we take 2045 away from 2370, we end up with 325.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3250, and continue the process.

Going ahead to step 15:
409 can be fit into 3250 7 times, resulting in a remainder of 387.
Use 7 as the next digit of our solution. 
Result so far: 45381.8410757
Subtracting 2863 from 3250 leaves us with 387.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3870, and continue the process.

Moving on to step 16:
409 can be fit into 3870 9 times, resulting in a remainder of 189.
Use 9 as the next digit of our solution. 
Result so far: 45381.84107579
If we take 3681 away from 3870, we end up with 189.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1890, and continue the process.

Our division results in 45381.84107579 with a remaining 1.89e-07.