509412 divided by 77 
Our goal is to divide 509412 by 77.

On to step 1:
When dividing 5 by 77, we get 0 with a remainder of 5.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 5, we end up with 5.
Fetch the next digit (0) from the dividend, attach it to 5 and continue: 50 / 77

Going ahead to step 2:
77 can be fit into 50 0 times, resulting in a remainder of 50.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 50, we get 50.
Include the next digit (9) from the dividend after 50, then repeat: 509 / 77

Going ahead to step 3:
77 can be fit into 509 6 times, resulting in a remainder of 47.
The number 6 becomes the next digit in our result. 
Result so far: 6.0
Subtracting 462 from 509 leaves us with 47.
Bring next digit (4) of the dividend behind the 47 and repeat the process: 474 / 77

On to step 4:
The number 77 fits into 474 6 times, leaving a remainder of 12.
Record the quotient 6 as the next digit in the result. 
Result so far: 66.0
Subtract 462 from 474 to get 12.
Bring next digit (1) of the dividend behind the 12 and repeat the process: 121 / 77

Let's proceed to step 5:
If we divide 121 by 77, we get 1 and a remainder of 44.
Use 1 as the next digit of our solution. 
Result so far: 661.0
Deduct 77 from 121 and we're left with 44.
Grab the next digit (2) from the dividend, add it to 44, then carry on: 442 / 77

Step 6:
77 goes into 442 5 times with a remainder of 57.
Record the quotient 5 as the next digit in the result. 
Result so far: 6615.0
Subtracting 385 from 442 leaves us with 57.
Since there are no more digits in the dividend, we add a zero to the remainder making it 570, and continue the process.

Moving on to step 7:
The number 77 fits into 570 7 times, leaving a remainder of 31.
Record the quotient 7 as the next digit in the result. 
Result so far: 6615.7
If we take 539 away from 570, we end up with 31.
Since there are no more digits in the dividend, we add a zero to the remainder making it 310, and continue the process.

Advancing to step 8:
310 divided by 77 is 4 with a remainder of 2.
Write down 4 as next digit of the result. 
Result so far: 6615.74
Subtracting 308 from 310 leaves us with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Advancing to step 9:
77 can be fit into 20 0 times, resulting in a remainder of 20.
Use 0 as the next digit of our solution. 
Result so far: 6615.74
Subtract 0 from 20 to get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Going ahead to step 10:
If we divide 200 by 77, we get 2 and a remainder of 46.
Write down 2 as next digit of the result. 
Result so far: 6615.7402
Subtract 154 from 200 to get 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

On to step 11:
When dividing 460 by 77, we get 5 with a remainder of 75.
The next digit of our result is 5. 
Result so far: 6615.74025
Deduct 385 from 460 and we're left 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.

Moving on to step 12:
77 goes into 750 9 times with a remainder of 57.
The next digit of our result is 9. 
Result so far: 6615.740259
If we take 693 away from 750, we end up with 57.
Since there are no more digits in the dividend, we add a zero to the remainder making it 570, and continue the process.

Moving on to step 13:
The number 77 fits into 570 7 times, leaving a remainder of 31.
Record the quotient 7 as the next digit in the result. 
Result so far: 6615.7402597
Subtracting 539 from 570 leaves us with 31.
Since there are no more digits in the dividend, we add a zero to the remainder making it 310, and continue the process.

Let's proceed to step 14:
The number 77 fits into 310 4 times, leaving a remainder of 2.
The number 4 becomes the next digit in our result. 
Result so far: 6615.74025974
Deduct 308 from 310 and we're left with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Our division results in 6615.74025974 with a remaining 2e-09.