We look at the division of 78766425 by 258 
We're looking to find how many times 258 goes into 78766425.

On to step 1:
258 can be fit into 7 0 times, resulting in a remainder of 7.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 7 after subtracting 0 from 7.
Bring next digit (8) of the dividend behind the 7 and repeat the process: 78 / 258

Let's proceed to step 2:
When dividing 78 by 258, we get 0 with a remainder of 78.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 78 leaves us with 78.
Include the next digit (7) from the dividend after 78, then repeat: 787 / 258

Advancing to step 3:
The number 258 fits into 787 3 times, leaving a remainder of 13.
Put 3 as the next digit of the answer. 
Result so far: 3.0
The remainder is 13 after subtracting 774 from 787.
Fetch the next digit (6) from the dividend, attach it to 13 and continue: 136 / 258

Moving on to step 4:
The number 258 fits into 136 0 times, leaving a remainder of 136.
Write down 0 as next digit of the result. 
Result so far: 30.0
Deduct 0 from 136 and we're left with 136.
Bring next digit (6) of the dividend behind the 136 and repeat the process: 1366 / 258

Moving on to step 5:
When dividing 1366 by 258, we get 5 with a remainder of 76.
Record the quotient 5 as the next digit in the result. 
Result so far: 305.0
If we take 1290 away from 1366, we end up with 76.
Append the next digit (4) from the dividend to 76 and continue with: 764 / 258

On to step 6:
The number 258 fits into 764 2 times, leaving a remainder of 248.
Record the quotient 2 as the next digit in the result. 
Result so far: 3052.0
Subtracting 516 from 764 leaves us with 248.
Fetch the next digit (2) from the dividend, attach it to 248 and continue: 2482 / 258

Let's proceed to step 7:
2482 divided by 258 is 9 with a remainder of 160.
Use 9 as the next digit of our solution. 
Result so far: 30529.0
If we subtract 2322 from 2482, we get 160.
Take the next digit (5) from the dividend and append it to 160, then repeat: 1605 / 258

Step 8:
258 can be fit into 1605 6 times, resulting in a remainder of 57.
The number 6 becomes the next digit in our result. 
Result so far: 305296.0
The remainder is 57 after subtracting 1548 from 1605.
Since there are no more digits in the dividend, we add a zero to the remainder making it 570, and continue the process.

Moving on to step 9:
If we divide 570 by 258, we get 2 and a remainder of 54.
The next digit of our result is 2. 
Result so far: 305296.2
Deduct 516 from 570 and we're left with 54.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

Moving on to step 10:
If we divide 540 by 258, we get 2 and a remainder of 24.
Use 2 as the next digit of our solution. 
Result so far: 305296.22
The remainder is 24 after subtracting 516 from 540.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

The quotient of the division is 305296.22, and the remainder is 0.024.