We look at the division of 78439565 by 755 
Let's see how many times 755 fits into 78439565.

Step 1:
The number 755 fits into 7 0 times, leaving a remainder of 7.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 7 to get 7.
Fetch the next digit (8) from the dividend, attach it to 7 and continue: 78 / 755

Let's proceed to step 2:
755 goes into 78 0 times with a remainder of 78.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 78, we get 78.
Bring next digit (4) of the dividend behind the 78 and repeat the process: 784 / 755

On to step 3:
755 can be fit into 784 1 times, resulting in a remainder of 29.
The next digit of our result is 1. 
Result so far: 1.0
If we take 755 away from 784, we end up with 29.
Include the next digit (3) from the dividend after 29, then repeat: 293 / 755

On to step 4:
755 goes into 293 0 times with a remainder of 293.
Put 0 as the next digit of the answer. 
Result so far: 10.0
The remainder is 293 after subtracting 0 from 293.
Include the next digit (9) from the dividend after 293, then repeat: 2939 / 755

Step 5:
The number 755 fits into 2939 3 times, leaving a remainder of 674.
Use 3 as the next digit of our solution. 
Result so far: 103.0
Deduct 2265 from 2939 and we're left with 674.
Grab the next digit (5) from the dividend, add it to 674, then carry on: 6745 / 755

Moving on to step 6:
When dividing 6745 by 755, we get 8 with a remainder of 705.
Write down 8 as next digit of the result. 
Result so far: 1038.0
The remainder is 705 after subtracting 6040 from 6745.
Bring next digit (6) of the dividend behind the 705 and repeat the process: 7056 / 755

Going ahead to step 7:
The number 755 fits into 7056 9 times, leaving a remainder of 261.
Write down 9 as next digit of the result. 
Result so far: 10389.0
The remainder is 261 after subtracting 6795 from 7056.
Fetch the next digit (5) from the dividend, attach it to 261 and continue: 2615 / 755

Going ahead to step 8:
2615 divided by 755 is 3 with a remainder of 350.
The next digit of our result is 3. 
Result so far: 103893.0
If we take 2265 away from 2615, we end up with 350.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3500, and continue the process.

Let's proceed to step 9:
If we divide 3500 by 755, we get 4 and a remainder of 480.
Record the quotient 4 as the next digit in the result. 
Result so far: 103893.4
Subtracting 3020 from 3500 leaves us with 480.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4800, and continue the process.

Let's proceed to step 10:
755 can be fit into 4800 6 times, resulting in a remainder of 270.
Write down 6 as next digit of the result. 
Result so far: 103893.46
Subtract 4530 from 4800 to get 270.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2700, and continue the process.

Going ahead to step 11:
When dividing 2700 by 755, we get 3 with a remainder of 435.
Write down 3 as next digit of the result. 
Result so far: 103893.463
If we subtract 2265 from 2700, we get 435.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4350, and continue the process.

Let's proceed to step 12:
755 goes into 4350 5 times with a remainder of 575.
Record the quotient 5 as the next digit in the result. 
Result so far: 103893.4635
If we take 3775 away from 4350, we end up with 575.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5750, and continue the process.

Step 13:
5750 divided by 755 is 7 with a remainder of 465.
Record the quotient 7 as the next digit in the result. 
Result so far: 103893.46357
If we subtract 5285 from 5750, we get 465.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4650, and continue the process.

Advancing to step 14:
If we divide 4650 by 755, we get 6 and a remainder of 120.
The number 6 becomes the next digit in our result. 
Result so far: 103893.463576
If we subtract 4530 from 4650, we get 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1200, and continue the process.

Going ahead to step 15:
755 goes into 1200 1 times with a remainder of 445.
The next digit of our result is 1. 
Result so far: 103893.4635761
If we subtract 755 from 1200, we get 445.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4450, and continue the process.

On to step 16:
The number 755 fits into 4450 5 times, leaving a remainder of 675.
The next digit of our result is 5. 
Result so far: 103893.46357615
Subtract 3775 from 4450 to get 675.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6750, and continue the process.

In conclusion, the division gives 103893.46357615 with a balance of 6.75e-07.