We look at the division of 631345 by 78 
We're looking to find how many times 78 goes into 631345.

On to step 1:
6 divided by 78 is 0 with a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 6 to get 6.
Fetch the next digit (3) from the dividend, attach it to 6 and continue: 63 / 78

Going ahead to step 2:
63 divided by 78 is 0 with a remainder of 63.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 63 leaves us with 63.
Take the next digit (1) from the dividend and append it to 63, then repeat: 631 / 78

Going ahead to step 3:
78 goes into 631 8 times with a remainder of 7.
The next digit of our result is 8. 
Result so far: 8.0
Subtracting 624 from 631 leaves us with 7.
Fetch the next digit (3) from the dividend, attach it to 7 and continue: 73 / 78

On to step 4:
73 divided by 78 is 0 with a remainder of 73.
The number 0 becomes the next digit in our result. 
Result so far: 80.0
If we take 0 away from 73, we end up with 73.
Include the next digit (4) from the dividend after 73, then repeat: 734 / 78

Going ahead to step 5:
The number 78 fits into 734 9 times, leaving a remainder of 32.
The next digit of our result is 9. 
Result so far: 809.0
If we take 702 away from 734, we end up with 32.
Take the next digit (5) from the dividend and append it to 32, then repeat: 325 / 78

Going ahead to step 6:
When dividing 325 by 78, we get 4 with a remainder of 13.
Write down 4 as next digit of the result. 
Result so far: 8094.0
Deduct 312 from 325 and we're left with 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Going ahead to step 7:
When dividing 130 by 78, we get 1 with a remainder of 52.
Write down 1 as next digit of the result. 
Result so far: 8094.1
The remainder is 52 after subtracting 78 from 130.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

Moving on to step 8:
78 goes into 520 6 times with a remainder of 52.
The next digit of our result is 6. 
Result so far: 8094.16
Deduct 468 from 520 and we're left with 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

Going ahead to step 9:
78 goes into 520 6 times with a remainder of 52.
The next digit of our result is 6. 
Result so far: 8094.166
Subtracting 468 from 520 leaves us with 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

The quotient of the division is 8094.166, and the remainder is 0.0052.