78503959 divided by 759 
Our goal is to divide 78503959 by 759.

Advancing to step 1:
759 goes into 7 0 times with a remainder of 7.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 7 and we're left with 7.
Fetch the next digit (8) from the dividend, attach it to 7 and continue: 78 / 759

Advancing to step 2:
When dividing 78 by 759, we get 0 with a remainder of 78.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 78, we end up with 78.
Append the next digit (5) from the dividend to 78 and continue with: 785 / 759

Going ahead to step 3:
The number 759 fits into 785 1 times, leaving a remainder of 26.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Subtracting 759 from 785 leaves us with 26.
Fetch the next digit (0) from the dividend, attach it to 26 and continue: 260 / 759

Going ahead to step 4:
If we divide 260 by 759, we get 0 and a remainder of 260.
The next digit of our result is 0. 
Result so far: 10.0
Subtracting 0 from 260 leaves us with 260.
Append the next digit (3) from the dividend to 260 and continue with: 2603 / 759

Let's proceed to step 5:
If we divide 2603 by 759, we get 3 and a remainder of 326.
Write down 3 as next digit of the result. 
Result so far: 103.0
Subtracting 2277 from 2603 leaves us with 326.
Include the next digit (9) from the dividend after 326, then repeat: 3269 / 759

Step 6:
The number 759 fits into 3269 4 times, leaving a remainder of 233.
Put 4 as the next digit of the answer. 
Result so far: 1034.0
Subtracting 3036 from 3269 leaves us with 233.
Bring next digit (5) of the dividend behind the 233 and repeat the process: 2335 / 759

Let's proceed to step 7:
When dividing 2335 by 759, we get 3 with a remainder of 58.
Put 3 as the next digit of the answer. 
Result so far: 10343.0
If we take 2277 away from 2335, we end up with 58.
Take the next digit (9) from the dividend and append it to 58, then repeat: 589 / 759

On to step 8:
759 goes into 589 0 times with a remainder of 589.
Write down 0 as next digit of the result. 
Result so far: 103430.0
Deduct 0 from 589 and we're left with 589.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5890, and continue the process.

Going ahead to step 9:
When dividing 5890 by 759, we get 7 with a remainder of 577.
The number 7 becomes the next digit in our result. 
Result so far: 103430.7
Subtracting 5313 from 5890 leaves us with 577.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5770, and continue the process.

Advancing to step 10:
If we divide 5770 by 759, we get 7 and a remainder of 457.
Put 7 as the next digit of the answer. 
Result so far: 103430.77
Subtract 5313 from 5770 to get 457.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4570, and continue the process.

The final outcome is 103430.77, with a leftover of 0.457.