521887 divided by 78 
Our goal is to divide 521887 by 78.

Moving on to step 1:
5 divided by 78 is 0 with a remainder of 5.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 5, we get 5.
Grab the next digit (2) from the dividend, add it to 5, then carry on: 52 / 78

Moving on to step 2:
52 divided by 78 is 0 with a remainder of 52.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 52 and we're left with 52.
Take the next digit (1) from the dividend and append it to 52, then repeat: 521 / 78

Going ahead to step 3:
If we divide 521 by 78, we get 6 and a remainder of 53.
The next digit of our result is 6. 
Result so far: 6.0
If we subtract 468 from 521, we get 53.
Grab the next digit (8) from the dividend, add it to 53, then carry on: 538 / 78

On to step 4:
78 goes into 538 6 times with a remainder of 70.
Use 6 as the next digit of our solution. 
Result so far: 66.0
Subtracting 468 from 538 leaves us with 70.
Append the next digit (8) from the dividend to 70 and continue with: 708 / 78

Moving on to step 5:
When dividing 708 by 78, we get 9 with a remainder of 6.
Write down 9 as next digit of the result. 
Result so far: 669.0
Deduct 702 from 708 and we're left with 6.
Fetch the next digit (7) from the dividend, attach it to 6 and continue: 67 / 78

Step 6:
If we divide 67 by 78, we get 0 and a remainder of 67.
Write down 0 as next digit of the result. 
Result so far: 6690.0
If we take 0 away from 67, we end up with 67.
Since there are no more digits in the dividend, we add a zero to the remainder making it 670, and continue the process.

Advancing to step 7:
The number 78 fits into 670 8 times, leaving a remainder of 46.
The number 8 becomes the next digit in our result. 
Result so far: 6690.8
The remainder is 46 after subtracting 624 from 670.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Step 8:
78 can be fit into 460 5 times, resulting in a remainder of 70.
Put 5 as the next digit of the answer. 
Result so far: 6690.85
Deduct 390 from 460 and we're left with 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

On to step 9:
700 divided by 78 is 8 with a remainder of 76.
The next digit of our result is 8. 
Result so far: 6690.858
Deduct 624 from 700 and we're left with 76.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

Advancing to step 10:
The number 78 fits into 760 9 times, leaving a remainder of 58.
Write down 9 as next digit of the result. 
Result so far: 6690.8589
The remainder is 58 after subtracting 702 from 760.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

Moving on to step 11:
580 divided by 78 is 7 with a remainder of 34.
The next digit of our result is 7. 
Result so far: 6690.85897
If we subtract 546 from 580, we get 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Advancing to step 12:
When dividing 340 by 78, we get 4 with a remainder of 28.
Write down 4 as next digit of the result. 
Result so far: 6690.858974
If we take 312 away from 340, we end up with 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Going ahead to step 13:
The number 78 fits into 280 3 times, leaving a remainder of 46.
The number 3 becomes the next digit in our result. 
Result so far: 6690.8589743
The remainder is 46 after subtracting 234 from 280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Step 14:
78 goes into 460 5 times with a remainder of 70.
Write down 5 as next digit of the result. 
Result so far: 6690.85897435
If we subtract 390 from 460, we get 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Our division results in 6690.85897435 with a remaining 7e-08.