Let's divide 78961512 by 25
Our goal is to divide 78961512 by 25.

Moving on to step 1:
The number 25 fits into 7 0 times, leaving a remainder of 7.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 7, we get 7.
Grab the next digit (8) from the dividend, add it to 7, then carry on: 78 / 25

Moving on to step 2:
78 divided by 25 is 3 with a remainder of 3.
Write down 3 as next digit of the result. 
Result so far: 3.0
If we take 75 away from 78, we end up with 3.
Include the next digit (9) from the dividend after 3, then repeat: 39 / 25

Let's proceed to step 3:
25 goes into 39 1 times with a remainder of 14.
Write down 1 as next digit of the result. 
Result so far: 31.0
Subtract 25 from 39 to get 14.
Include the next digit (6) from the dividend after 14, then repeat: 146 / 25

Moving on to step 4:
If we divide 146 by 25, we get 5 and a remainder of 21.
Use 5 as the next digit of our solution. 
Result so far: 315.0
The remainder is 21 after subtracting 125 from 146.
Grab the next digit (1) from the dividend, add it to 21, then carry on: 211 / 25

Let's proceed to step 5:
When dividing 211 by 25, we get 8 with a remainder of 11.
The number 8 becomes the next digit in our result. 
Result so far: 3158.0
The remainder is 11 after subtracting 200 from 211.
Append the next digit (5) from the dividend to 11 and continue with: 115 / 25

Moving on to step 6:
25 can be fit into 115 4 times, resulting in a remainder of 15.
Record the quotient 4 as the next digit in the result. 
Result so far: 31584.0
If we subtract 100 from 115, we get 15.
Include the next digit (1) from the dividend after 15, then repeat: 151 / 25

Let's proceed to step 7:
25 can be fit into 151 6 times, resulting in a remainder of 1.
Use 6 as the next digit of our solution. 
Result so far: 315846.0
Deduct 150 from 151 and we're left with 1.
Include the next digit (2) from the dividend after 1, then repeat: 12 / 25

Moving on to step 8:
When dividing 12 by 25, we get 0 with a remainder of 12.
Use 0 as the next digit of our solution. 
Result so far: 3158460.0
If we take 0 away from 12, 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.

On to step 9:
When dividing 120 by 25, we get 4 with a remainder of 20.
Use 4 as the next digit of our solution. 
Result so far: 3158460.4
If we subtract 100 from 120, we get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Step 10:
25 can be fit into 200 8 times, resulting in a remainder of 0.
Use 8 as the next digit of our solution. 
Result so far: 3158460.48
The remainder is 0 after subtracting 200 from 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Step 11:
When dividing 0 by 25, we get 0 with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 3158460.48
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.

On to step 12:
25 goes into 0 0 times with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 3158460.48
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.

Our division results in 3158460.48 with a remaining 0.0.