78338766 ÷ 285 
We want to figure out the number of times 78338766 can be divided by 285.

On to step 1:
285 can be fit into 7 0 times, resulting in a remainder of 7.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 7 after subtracting 0 from 7.
Fetch the next digit (8) from the dividend, attach it to 7 and continue: 78 / 285

Step 2:
If we divide 78 by 285, we get 0 and a remainder of 78.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 78, we end up with 78.
Append the next digit (3) from the dividend to 78 and continue with: 783 / 285

Advancing to step 3:
If we divide 783 by 285, we get 2 and a remainder of 213.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
If we subtract 570 from 783, we get 213.
Include the next digit (3) from the dividend after 213, then repeat: 2133 / 285

Let's proceed to step 4:
2133 divided by 285 is 7 with a remainder of 138.
Use 7 as the next digit of our solution. 
Result so far: 27.0
Subtracting 1995 from 2133 leaves us with 138.
Include the next digit (8) from the dividend after 138, then repeat: 1388 / 285

Step 5:
1388 divided by 285 is 4 with a remainder of 248.
Record the quotient 4 as the next digit in the result. 
Result so far: 274.0
Deduct 1140 from 1388 and we're left with 248.
Fetch the next digit (7) from the dividend, attach it to 248 and continue: 2487 / 285

Going ahead to step 6:
2487 divided by 285 is 8 with a remainder of 207.
The next digit of our result is 8. 
Result so far: 2748.0
If we take 2280 away from 2487, we end up with 207.
Fetch the next digit (6) from the dividend, attach it to 207 and continue: 2076 / 285

Step 7:
When dividing 2076 by 285, we get 7 with a remainder of 81.
Write down 7 as next digit of the result. 
Result so far: 27487.0
Subtracting 1995 from 2076 leaves us with 81.
Take the next digit (6) from the dividend and append it to 81, then repeat: 816 / 285

Step 8:
285 can be fit into 816 2 times, resulting in a remainder of 246.
Put 2 as the next digit of the answer. 
Result so far: 274872.0
Subtracting 570 from 816 leaves us with 246.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2460, and continue the process.

On to step 9:
2460 divided by 285 is 8 with a remainder of 180.
The next digit of our result is 8. 
Result so far: 274872.8
Deduct 2280 from 2460 and we're left with 180.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1800, and continue the process.

Let's proceed to step 10:
285 can be fit into 1800 6 times, resulting in a remainder of 90.
Write down 6 as next digit of the result. 
Result so far: 274872.86
Subtracting 1710 from 1800 leaves us with 90.
Since there are no more digits in the dividend, we add a zero to the remainder making it 900, and continue the process.

Advancing to step 11:
285 goes into 900 3 times with a remainder of 45.
The next digit of our result is 3. 
Result so far: 274872.863
If we take 855 away from 900, we end up with 45.
Since there are no more digits in the dividend, we add a zero to the remainder making it 450, and continue the process.

Step 12:
If we divide 450 by 285, we get 1 and a remainder of 165.
Record the quotient 1 as the next digit in the result. 
Result so far: 274872.8631
If we take 285 away from 450, we end up with 165.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1650, and continue the process.

Let's proceed to step 13:
1650 divided by 285 is 5 with a remainder of 225.
The next digit of our result is 5. 
Result so far: 274872.86315
The remainder is 225 after subtracting 1425 from 1650.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2250, and continue the process.

Moving on to step 14:
If we divide 2250 by 285, we get 7 and a remainder of 255.
Use 7 as the next digit of our solution. 
Result so far: 274872.863157
Deduct 1995 from 2250 and we're left with 255.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2550, and continue the process.

Going ahead to step 15:
When dividing 2550 by 285, we get 8 with a remainder of 270.
The number 8 becomes the next digit in our result. 
Result so far: 274872.8631578
The remainder is 270 after subtracting 2280 from 2550.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2700, and continue the process.

Advancing to step 16:
285 can be fit into 2700 9 times, resulting in a remainder of 135.
The number 9 becomes the next digit in our result. 
Result so far: 274872.86315789
If we subtract 2565 from 2700, we get 135.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1350, and continue the process.

The quotient of the division is 274872.86315789, and the remainder is 1.35e-07.