We divide 78810080 by 931
Let's see how many times 931 fits into 78810080.

On to step 1:
When dividing 7 by 931, we get 0 with a remainder of 7.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 7 leaves us with 7.
Take the next digit (8) from the dividend and append it to 7, then repeat: 78 / 931

Let's proceed to step 2:
When dividing 78 by 931, we get 0 with a remainder of 78.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 78 after subtracting 0 from 78.
Append the next digit (8) from the dividend to 78 and continue with: 788 / 931

Going ahead to step 3:
931 can be fit into 788 0 times, resulting in a remainder of 788.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 788, we end up with 788.
Append the next digit (1) from the dividend to 788 and continue with: 7881 / 931

Moving on to step 4:
931 can be fit into 7881 8 times, resulting in a remainder of 433.
Use 8 as the next digit of our solution. 
Result so far: 8.0
The remainder is 433 after subtracting 7448 from 7881.
Fetch the next digit (0) from the dividend, attach it to 433 and continue: 4330 / 931

Advancing to step 5:
The number 931 fits into 4330 4 times, leaving a remainder of 606.
Write down 4 as next digit of the result. 
Result so far: 84.0
Deduct 3724 from 4330 and we're left with 606.
Fetch the next digit (0) from the dividend, attach it to 606 and continue: 6060 / 931

Moving on to step 6:
If we divide 6060 by 931, we get 6 and a remainder of 474.
Put 6 as the next digit of the answer. 
Result so far: 846.0
The remainder is 474 after subtracting 5586 from 6060.
Include the next digit (8) from the dividend after 474, then repeat: 4748 / 931

On to step 7:
If we divide 4748 by 931, we get 5 and a remainder of 93.
Record the quotient 5 as the next digit in the result. 
Result so far: 8465.0
If we subtract 4655 from 4748, we get 93.
Append the next digit (0) from the dividend to 93 and continue with: 930 / 931

Going ahead to step 8:
The number 931 fits into 930 0 times, leaving a remainder of 930.
The number 0 becomes the next digit in our result. 
Result so far: 84650.0
If we take 0 away from 930, we end up with 930.
Since there are no more digits in the dividend, we add a zero to the remainder making it 9300, and continue the process.

Moving on to step 9:
The number 931 fits into 9300 9 times, leaving a remainder of 921.
Write down 9 as next digit of the result. 
Result so far: 84650.9
If we take 8379 away from 9300, we end up with 921.
Since there are no more digits in the dividend, we add a zero to the remainder making it 9210, and continue the process.

Moving on to step 10:
If we divide 9210 by 931, we get 9 and a remainder of 831.
Use 9 as the next digit of our solution. 
Result so far: 84650.99
Deduct 8379 from 9210 and we're left with 831.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8310, and continue the process.

The final result is 84650.99 with a remainder of 0.831.