Let's divide 513391 by 77
We want to figure out the number of times 513391 can be divided by 77.

Advancing to step 1:
77 can be fit into 5 0 times, resulting in a remainder of 5.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 5 and we're left with 5.
Append the next digit (1) from the dividend to 5 and continue with: 51 / 77

On to step 2:
The number 77 fits into 51 0 times, leaving a remainder of 51.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 51 and we're left with 51.
Append the next digit (3) from the dividend to 51 and continue with: 513 / 77

On to step 3:
77 goes into 513 6 times with a remainder of 51.
The next digit of our result is 6. 
Result so far: 6.0
Deduct 462 from 513 and we're left with 51.
Grab the next digit (3) from the dividend, add it to 51, then carry on: 513 / 77

Going ahead to step 4:
513 divided by 77 is 6 with a remainder of 51.
Write down 6 as next digit of the result. 
Result so far: 66.0
Subtracting 462 from 513 leaves us with 51.
Bring next digit (9) of the dividend behind the 51 and repeat the process: 519 / 77

Going ahead to step 5:
If we divide 519 by 77, we get 6 and a remainder of 57.
Write down 6 as next digit of the result. 
Result so far: 666.0
The remainder is 57 after subtracting 462 from 519.
Fetch the next digit (1) from the dividend, attach it to 57 and continue: 571 / 77

Let's proceed to step 6:
If we divide 571 by 77, we get 7 and a remainder of 32.
The number 7 becomes the next digit in our result. 
Result so far: 6667.0
If we subtract 539 from 571, we get 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Advancing to step 7:
77 goes into 320 4 times with a remainder of 12.
Write down 4 as next digit of the result. 
Result so far: 6667.4
If we take 308 away from 320, we end up with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Let's proceed to step 8:
When dividing 120 by 77, we get 1 with a remainder of 43.
Use 1 as the next digit of our solution. 
Result so far: 6667.41
Deduct 77 from 120 and we're left with 43.
Since there are no more digits in the dividend, we add a zero to the remainder making it 430, and continue the process.

Going ahead to step 9:
The number 77 fits into 430 5 times, leaving a remainder of 45.
Use 5 as the next digit of our solution. 
Result so far: 6667.415
The remainder is 45 after subtracting 385 from 430.
Since there are no more digits in the dividend, we add a zero to the remainder making it 450, and continue the process.

Let's proceed to step 10:
When dividing 450 by 77, we get 5 with a remainder of 65.
Record the quotient 5 as the next digit in the result. 
Result so far: 6667.4155
Subtract 385 from 450 to get 65.
Since there are no more digits in the dividend, we add a zero to the remainder making it 650, and continue the process.

The final result is 6667.4155 with a remainder of 0.00065.