439990 ÷ 511 
Let's see how many times 511 fits into 439990.

Moving on to step 1:
If we divide 4 by 511, we get 0 and a remainder of 4.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 4, we get 4.
Bring next digit (3) of the dividend behind the 4 and repeat the process: 43 / 511

Going ahead to step 2:
43 divided by 511 is 0 with a remainder of 43.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 43 after subtracting 0 from 43.
Fetch the next digit (9) from the dividend, attach it to 43 and continue: 439 / 511

Step 3:
If we divide 439 by 511, we get 0 and a remainder of 439.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 439 to get 439.
Take the next digit (9) from the dividend and append it to 439, then repeat: 4399 / 511

Let's proceed to step 4:
When dividing 4399 by 511, we get 8 with a remainder of 311.
Write down 8 as next digit of the result. 
Result so far: 8.0
Deduct 4088 from 4399 and we're left with 311.
Bring next digit (9) of the dividend behind the 311 and repeat the process: 3119 / 511

Going ahead to step 5:
When dividing 3119 by 511, we get 6 with a remainder of 53.
The number 6 becomes the next digit in our result. 
Result so far: 86.0
Subtract 3066 from 3119 to get 53.
Take the next digit (0) from the dividend and append it to 53, then repeat: 530 / 511

Advancing to step 6:
530 divided by 511 is 1 with a remainder of 19.
Put 1 as the next digit of the answer. 
Result so far: 861.0
Subtracting 511 from 530 leaves us with 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Going ahead to step 7:
190 divided by 511 is 0 with a remainder of 190.
Use 0 as the next digit of our solution. 
Result so far: 861.0
If we subtract 0 from 190, we get 190.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1900, and continue the process.

On to step 8:
When dividing 1900 by 511, we get 3 with a remainder of 367.
The number 3 becomes the next digit in our result. 
Result so far: 861.03
Subtract 1533 from 1900 to get 367.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3670, and continue the process.

Moving on to step 9:
3670 divided by 511 is 7 with a remainder of 93.
Use 7 as the next digit of our solution. 
Result so far: 861.037
Deduct 3577 from 3670 and we're left with 93.
Since there are no more digits in the dividend, we add a zero to the remainder making it 930, and continue the process.

Moving on to step 10:
The number 511 fits into 930 1 times, leaving a remainder of 419.
Use 1 as the next digit of our solution. 
Result so far: 861.0371
The remainder is 419 after subtracting 511 from 930.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4190, and continue the process.

Moving on to step 11:
511 goes into 4190 8 times with a remainder of 102.
The next digit of our result is 8. 
Result so far: 861.03718
Subtract 4088 from 4190 to get 102.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1020, and continue the process.

Going ahead to step 12:
The number 511 fits into 1020 1 times, leaving a remainder of 509.
The number 1 becomes the next digit in our result. 
Result so far: 861.037181
If we subtract 511 from 1020, we get 509.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5090, and continue the process.

Step 13:
When dividing 5090 by 511, we get 9 with a remainder of 491.
Record the quotient 9 as the next digit in the result. 
Result so far: 861.0371819
Deduct 4599 from 5090 and we're left with 491.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4910, and continue the process.

Let's proceed to step 14:
511 can be fit into 4910 9 times, resulting in a remainder of 311.
The next digit of our result is 9. 
Result so far: 861.03718199
Subtract 4599 from 4910 to get 311.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3110, and continue the process.

The final result is 861.03718199 with a remainder of 3.11e-07.