We're dividing 390519 by 91 
Our goal is to divide 390519 by 91.

On to step 1:
The number 91 fits into 3 0 times, leaving a remainder of 3.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 3, we end up with 3.
Take the next digit (9) from the dividend and append it to 3, then repeat: 39 / 91

Step 2:
91 goes into 39 0 times with a remainder of 39.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 39 leaves us with 39.
Take the next digit (0) from the dividend and append it to 39, then repeat: 390 / 91

Let's proceed to step 3:
390 divided by 91 is 4 with a remainder of 26.
Put 4 as the next digit of the answer. 
Result so far: 4.0
If we take 364 away from 390, we end up with 26.
Append the next digit (5) from the dividend to 26 and continue with: 265 / 91

On to step 4:
The number 91 fits into 265 2 times, leaving a remainder of 83.
Put 2 as the next digit of the answer. 
Result so far: 42.0
The remainder is 83 after subtracting 182 from 265.
Include the next digit (1) from the dividend after 83, then repeat: 831 / 91

Going ahead to step 5:
When dividing 831 by 91, we get 9 with a remainder of 12.
The number 9 becomes the next digit in our result. 
Result so far: 429.0
If we take 819 away from 831, we end up with 12.
Bring next digit (9) of the dividend behind the 12 and repeat the process: 129 / 91

Advancing to step 6:
When dividing 129 by 91, we get 1 with a remainder of 38.
The next digit of our result is 1. 
Result so far: 4291.0
Deduct 91 from 129 and we're left with 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Step 7:
91 can be fit into 380 4 times, resulting in a remainder of 16.
Put 4 as the next digit of the answer. 
Result so far: 4291.4
If we take 364 away from 380, we end up with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Advancing to step 8:
91 goes into 160 1 times with a remainder of 69.
Use 1 as the next digit of our solution. 
Result so far: 4291.41
If we take 91 away from 160, we end up with 69.
Since there are no more digits in the dividend, we add a zero to the remainder making it 690, and continue the process.

On to step 9:
When dividing 690 by 91, we get 7 with a remainder of 53.
Use 7 as the next digit of our solution. 
Result so far: 4291.417
Subtracting 637 from 690 leaves us with 53.
Since there are no more digits in the dividend, we add a zero to the remainder making it 530, and continue the process.

Step 10:
91 can be fit into 530 5 times, resulting in a remainder of 75.
Use 5 as the next digit of our solution. 
Result so far: 4291.4175
If we take 455 away from 530, we end up with 75.
Since there are no more digits in the dividend, we add a zero to the remainder making it 750, and continue the process.

Advancing to step 11:
The number 91 fits into 750 8 times, leaving a remainder of 22.
Use 8 as the next digit of our solution. 
Result so far: 4291.41758
Subtracting 728 from 750 leaves us with 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Let's proceed to step 12:
The number 91 fits into 220 2 times, leaving a remainder of 38.
Record the quotient 2 as the next digit in the result. 
Result so far: 4291.417582
If we subtract 182 from 220, we get 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Step 13:
The number 91 fits into 380 4 times, leaving a remainder of 16.
The number 4 becomes the next digit in our result. 
Result so far: 4291.4175824
If we take 364 away from 380, we end up with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Advancing to step 14:
160 divided by 91 is 1 with a remainder of 69.
Write down 1 as next digit of the result. 
Result so far: 4291.41758241
Subtracting 91 from 160 leaves us with 69.
Since there are no more digits in the dividend, we add a zero to the remainder making it 690, and continue the process.

After the division, we end up with 4291.41758241 and a remainder of 6.9e-08.