Let's divide 78991003 by 25
Our goal is to divide 78991003 by 25.

Going ahead to step 1:
7 divided by 25 is 0 with a remainder of 7.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 7 leaves us with 7.
Bring next digit (8) of the dividend behind the 7 and repeat the process: 78 / 25

Advancing to step 2:
When dividing 78 by 25, we get 3 with a remainder of 3.
The next digit of our result is 3. 
Result so far: 3.0
If we take 75 away from 78, we end up with 3.
Take the next digit (9) from the dividend and append it to 3, then repeat: 39 / 25

On to step 3:
The number 25 fits into 39 1 times, leaving a remainder of 14.
Put 1 as the next digit of the answer. 
Result so far: 31.0
If we take 25 away from 39, we end up with 14.
Append the next digit (9) from the dividend to 14 and continue with: 149 / 25

Going ahead to step 4:
25 goes into 149 5 times with a remainder of 24.
The number 5 becomes the next digit in our result. 
Result so far: 315.0
Deduct 125 from 149 and we're left with 24.
Append the next digit (1) from the dividend to 24 and continue with: 241 / 25

Going ahead to step 5:
25 can be fit into 241 9 times, resulting in a remainder of 16.
Write down 9 as next digit of the result. 
Result so far: 3159.0
If we subtract 225 from 241, we get 16.
Include the next digit (0) from the dividend after 16, then repeat: 160 / 25

On to step 6:
25 goes into 160 6 times with a remainder of 10.
Put 6 as the next digit of the answer. 
Result so far: 31596.0
If we take 150 away from 160, we end up with 10.
Bring next digit (0) of the dividend behind the 10 and repeat the process: 100 / 25

Advancing to step 7:
When dividing 100 by 25, we get 4 with a remainder of 0.
Use 4 as the next digit of our solution. 
Result so far: 315964.0
The remainder is 0 after subtracting 100 from 100.
Grab the next digit (3) from the dividend, add it to 0, then carry on: 3 / 25

On to step 8:
The number 25 fits into 3 0 times, leaving a remainder of 3.
Put 0 as the next digit of the answer. 
Result so far: 3159640.0
Subtract 0 from 3 to get 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Advancing to step 9:
25 can be fit into 30 1 times, resulting in a remainder of 5.
Use 1 as the next digit of our solution. 
Result so far: 3159640.1
Deduct 25 from 30 and we're left with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Moving on to step 10:
25 can be fit into 50 2 times, resulting in a remainder of 0.
Use 2 as the next digit of our solution. 
Result so far: 3159640.12
The remainder is 0 after subtracting 50 from 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Let's proceed to step 11:
If we divide 0 by 25, we get 0 and a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 3159640.12
Subtracting 0 from 0 leaves us with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Going ahead to step 12:
0 divided by 25 is 0 with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 3159640.12
If we subtract 0 from 0, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

In conclusion, the division gives 3159640.12 with a balance of 0.0.