We look at the division of 77429387 by 513 
We want to divide 77429387 by 513.

Moving on to step 1:
7 divided by 513 is 0 with a remainder of 7.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 7 after subtracting 0 from 7.
Bring next digit (7) of the dividend behind the 7 and repeat the process: 77 / 513

Let's proceed to step 2:
513 goes into 77 0 times with a remainder of 77.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 77 leaves us with 77.
Grab the next digit (4) from the dividend, add it to 77, then carry on: 774 / 513

On to step 3:
774 divided by 513 is 1 with a remainder of 261.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Subtracting 513 from 774 leaves us with 261.
Grab the next digit (2) from the dividend, add it to 261, then carry on: 2612 / 513

Moving on to step 4:
When dividing 2612 by 513, we get 5 with a remainder of 47.
Record the quotient 5 as the next digit in the result. 
Result so far: 15.0
The remainder is 47 after subtracting 2565 from 2612.
Bring next digit (9) of the dividend behind the 47 and repeat the process: 479 / 513

Let's proceed to step 5:
513 goes into 479 0 times with a remainder of 479.
The number 0 becomes the next digit in our result. 
Result so far: 150.0
If we subtract 0 from 479, we get 479.
Bring next digit (3) of the dividend behind the 479 and repeat the process: 4793 / 513

Going ahead to step 6:
513 goes into 4793 9 times with a remainder of 176.
Put 9 as the next digit of the answer. 
Result so far: 1509.0
If we subtract 4617 from 4793, we get 176.
Append the next digit (8) from the dividend to 176 and continue with: 1768 / 513

Advancing to step 7:
513 can be fit into 1768 3 times, resulting in a remainder of 229.
Record the quotient 3 as the next digit in the result. 
Result so far: 15093.0
Subtract 1539 from 1768 to get 229.
Append the next digit (7) from the dividend to 229 and continue with: 2297 / 513

Going ahead to step 8:
When dividing 2297 by 513, we get 4 with a remainder of 245.
Use 4 as the next digit of our solution. 
Result so far: 150934.0
The remainder is 245 after subtracting 2052 from 2297.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2450, and continue the process.

Let's proceed to step 9:
513 goes into 2450 4 times with a remainder of 398.
Put 4 as the next digit of the answer. 
Result so far: 150934.4
If we subtract 2052 from 2450, we get 398.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3980, and continue the process.

Let's proceed to step 10:
513 can be fit into 3980 7 times, resulting in a remainder of 389.
Record the quotient 7 as the next digit in the result. 
Result so far: 150934.47
Subtract 3591 from 3980 to get 389.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3890, and continue the process.

Going ahead to step 11:
3890 divided by 513 is 7 with a remainder of 299.
The next digit of our result is 7. 
Result so far: 150934.477
The remainder is 299 after subtracting 3591 from 3890.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2990, and continue the process.

The final outcome is 150934.477, with a leftover of 0.0299.