We're dividing 409515 by 391 
We're looking to find how many times 391 goes into 409515.

Moving on to step 1:
When dividing 4 by 391, we get 0 with a remainder of 4.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 4 to get 4.
Take the next digit (0) from the dividend and append it to 4, then repeat: 40 / 391

Step 2:
The number 391 fits into 40 0 times, leaving a remainder of 40.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 40 to get 40.
Append the next digit (9) from the dividend to 40 and continue with: 409 / 391

Moving on to step 3:
The number 391 fits into 409 1 times, leaving a remainder of 18.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
If we subtract 391 from 409, we get 18.
Take the next digit (5) from the dividend and append it to 18, then repeat: 185 / 391

Let's proceed to step 4:
When dividing 185 by 391, we get 0 with a remainder of 185.
Write down 0 as next digit of the result. 
Result so far: 10.0
If we take 0 away from 185, we end up with 185.
Grab the next digit (1) from the dividend, add it to 185, then carry on: 1851 / 391

Step 5:
If we divide 1851 by 391, we get 4 and a remainder of 287.
Use 4 as the next digit of our solution. 
Result so far: 104.0
Deduct 1564 from 1851 and we're left with 287.
Take the next digit (5) from the dividend and append it to 287, then repeat: 2875 / 391

Advancing to step 6:
391 goes into 2875 7 times with a remainder of 138.
Write down 7 as next digit of the result. 
Result so far: 1047.0
If we take 2737 away from 2875, we end up with 138.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1380, and continue the process.

Let's proceed to step 7:
391 can be fit into 1380 3 times, resulting in a remainder of 207.
Use 3 as the next digit of our solution. 
Result so far: 1047.3
If we take 1173 away from 1380, we end up with 207.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2070, and continue the process.

Let's proceed to step 8:
The number 391 fits into 2070 5 times, leaving a remainder of 115.
Put 5 as the next digit of the answer. 
Result so far: 1047.35
Subtracting 1955 from 2070 leaves us with 115.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1150, and continue the process.

On to step 9:
If we divide 1150 by 391, we get 2 and a remainder of 368.
Record the quotient 2 as the next digit in the result. 
Result so far: 1047.352
If we subtract 782 from 1150, we get 368.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3680, and continue the process.

Step 10:
The number 391 fits into 3680 9 times, leaving a remainder of 161.
The number 9 becomes the next digit in our result. 
Result so far: 1047.3529
Subtract 3519 from 3680 to get 161.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1610, and continue the process.

On to step 11:
When dividing 1610 by 391, we get 4 with a remainder of 46.
Record the quotient 4 as the next digit in the result. 
Result so far: 1047.35294
Deduct 1564 from 1610 and we're left with 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Advancing to step 12:
391 can be fit into 460 1 times, resulting in a remainder of 69.
The number 1 becomes the next digit in our result. 
Result so far: 1047.352941
If we subtract 391 from 460, we get 69.
Since there are no more digits in the dividend, we add a zero to the remainder making it 690, and continue the process.

Going ahead to step 13:
690 divided by 391 is 1 with a remainder of 299.
The next digit of our result is 1. 
Result so far: 1047.3529411
The remainder is 299 after subtracting 391 from 690.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2990, and continue the process.

Our division results in 1047.3529411 with a remaining 2.99e-06.