We look at the division of 1390809 by 511 
We want to figure out the number of times 1390809 can be divided by 511.

Let's proceed to step 1:
If we divide 1 by 511, we get 0 and a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 1 leaves us with 1.
Fetch the next digit (3) from the dividend, attach it to 1 and continue: 13 / 511

Advancing to step 2:
13 divided by 511 is 0 with a remainder of 13.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 13 after subtracting 0 from 13.
Bring next digit (9) of the dividend behind the 13 and repeat the process: 139 / 511

On to step 3:
511 goes into 139 0 times with a remainder of 139.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 139 and we're left with 139.
Append the next digit (0) from the dividend to 139 and continue with: 1390 / 511

Advancing to step 4:
When dividing 1390 by 511, we get 2 with a remainder of 368.
The next digit of our result is 2. 
Result so far: 2.0
The remainder is 368 after subtracting 1022 from 1390.
Grab the next digit (8) from the dividend, add it to 368, then carry on: 3688 / 511

Let's proceed to step 5:
If we divide 3688 by 511, we get 7 and a remainder of 111.
The number 7 becomes the next digit in our result. 
Result so far: 27.0
Deduct 3577 from 3688 and we're left with 111.
Grab the next digit (0) from the dividend, add it to 111, then carry on: 1110 / 511

Going ahead to step 6:
The number 511 fits into 1110 2 times, leaving a remainder of 88.
The number 2 becomes the next digit in our result. 
Result so far: 272.0
If we take 1022 away from 1110, we end up with 88.
Take the next digit (9) from the dividend and append it to 88, then repeat: 889 / 511

Step 7:
When dividing 889 by 511, we get 1 with a remainder of 378.
Put 1 as the next digit of the answer. 
Result so far: 2721.0
If we take 511 away from 889, we end up with 378.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3780, and continue the process.

Step 8:
511 can be fit into 3780 7 times, resulting in a remainder of 203.
The number 7 becomes the next digit in our result. 
Result so far: 2721.7
Subtract 3577 from 3780 to get 203.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2030, and continue the process.

On to step 9:
511 goes into 2030 3 times with a remainder of 497.
Use 3 as the next digit of our solution. 
Result so far: 2721.73
Subtract 1533 from 2030 to get 497.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4970, and continue the process.

On to step 10:
The number 511 fits into 4970 9 times, leaving a remainder of 371.
The number 9 becomes the next digit in our result. 
Result so far: 2721.739
Subtracting 4599 from 4970 leaves us with 371.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3710, and continue the process.

Advancing to step 11:
If we divide 3710 by 511, we get 7 and a remainder of 133.
The number 7 becomes the next digit in our result. 
Result so far: 2721.7397
The remainder is 133 after subtracting 3577 from 3710.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1330, and continue the process.

Going ahead to step 12:
511 goes into 1330 2 times with a remainder of 308.
Use 2 as the next digit of our solution. 
Result so far: 2721.73972
Subtracting 1022 from 1330 leaves us with 308.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3080, and continue the process.

On to step 13:
When dividing 3080 by 511, we get 6 with a remainder of 14.
Use 6 as the next digit of our solution. 
Result so far: 2721.739726
Subtract 3066 from 3080 to get 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Moving on to step 14:
The number 511 fits into 140 0 times, leaving a remainder of 140.
Write down 0 as next digit of the result. 
Result so far: 2721.739726
Deduct 0 from 140 and we're left with 140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1400, and continue the process.

Advancing to step 15:
The number 511 fits into 1400 2 times, leaving a remainder of 378.
Put 2 as the next digit of the answer. 
Result so far: 2721.73972602
Deduct 1022 from 1400 and we're left with 378.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3780, and continue the process.

Our division results in 2721.73972602 with a remaining 3.78e-07.