51999048 divided by 78 
We want to divide 51999048 by 78.

On to step 1:
When dividing 5 by 78, we get 0 with a remainder of 5.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 5 after subtracting 0 from 5.
Append the next digit (1) from the dividend to 5 and continue with: 51 / 78

Going ahead to step 2:
78 can be fit into 51 0 times, resulting in a remainder of 51.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 51 leaves us with 51.
Append the next digit (9) from the dividend to 51 and continue with: 519 / 78

Advancing to step 3:
The number 78 fits into 519 6 times, leaving a remainder of 51.
The number 6 becomes the next digit in our result. 
Result so far: 6.0
Subtract 468 from 519 to get 51.
Take the next digit (9) from the dividend and append it to 51, then repeat: 519 / 78

On to step 4:
78 can be fit into 519 6 times, resulting in a remainder of 51.
The next digit of our result is 6. 
Result so far: 66.0
Subtracting 468 from 519 leaves us with 51.
Fetch the next digit (9) from the dividend, attach it to 51 and continue: 519 / 78

Advancing to step 5:
If we divide 519 by 78, we get 6 and a remainder of 51.
Write down 6 as next digit of the result. 
Result so far: 666.0
Subtracting 468 from 519 leaves us with 51.
Bring next digit (0) of the dividend behind the 51 and repeat the process: 510 / 78

Step 6:
510 divided by 78 is 6 with a remainder of 42.
Put 6 as the next digit of the answer. 
Result so far: 6666.0
The remainder is 42 after subtracting 468 from 510.
Bring next digit (4) of the dividend behind the 42 and repeat the process: 424 / 78

Advancing to step 7:
78 can be fit into 424 5 times, resulting in a remainder of 34.
The next digit of our result is 5. 
Result so far: 66665.0
The remainder is 34 after subtracting 390 from 424.
Take the next digit (8) from the dividend and append it to 34, then repeat: 348 / 78

Going ahead to step 8:
If we divide 348 by 78, we get 4 and a remainder of 36.
Write down 4 as next digit of the result. 
Result so far: 666654.0
Subtract 312 from 348 to get 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Step 9:
78 can be fit into 360 4 times, resulting in a remainder of 48.
The number 4 becomes the next digit in our result. 
Result so far: 666654.4
Subtracting 312 from 360 leaves us with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Step 10:
78 goes into 480 6 times with a remainder of 12.
Record the quotient 6 as the next digit in the result. 
Result so far: 666654.46
Subtract 468 from 480 to get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Step 11:
If we divide 120 by 78, we get 1 and a remainder of 42.
Record the quotient 1 as the next digit in the result. 
Result so far: 666654.461
Deduct 78 from 120 and we're left with 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Advancing to step 12:
When dividing 420 by 78, we get 5 with a remainder of 30.
The next digit of our result is 5. 
Result so far: 666654.4615
If we subtract 390 from 420, we get 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

On to step 13:
300 divided by 78 is 3 with a remainder of 66.
The next digit of our result is 3. 
Result so far: 666654.46153
If we take 234 away from 300, we end up with 66.
Since there are no more digits in the dividend, we add a zero to the remainder making it 660, and continue the process.

Moving on to step 14:
When dividing 660 by 78, we get 8 with a remainder of 36.
Put 8 as the next digit of the answer. 
Result so far: 666654.461538
Deduct 624 from 660 and we're left with 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

On to step 15:
78 can be fit into 360 4 times, resulting in a remainder of 48.
The number 4 becomes the next digit in our result. 
Result so far: 666654.4615384
Deduct 312 from 360 and we're left with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Going ahead to step 16:
78 can be fit into 480 6 times, resulting in a remainder of 12.
The next digit of our result is 6. 
Result so far: 666654.46153846
If we take 468 away from 480, we end up with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

The final result is 666654.46153846 with a remainder of 1.2e-08.