Let's divide 51908184 by 78
Let's see how many times 78 fits into 51908184.

Step 1:
If we divide 5 by 78, we get 0 and a remainder of 5.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 5 leaves us with 5.
Append the next digit (1) from the dividend to 5 and continue with: 51 / 78

On to step 2:
When dividing 51 by 78, we get 0 with a remainder of 51.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 51, we end up with 51.
Grab the next digit (9) from the dividend, add it to 51, then carry on: 519 / 78

Advancing to step 3:
78 goes into 519 6 times with a remainder of 51.
Use 6 as the next digit of our solution. 
Result so far: 6.0
Deduct 468 from 519 and we're left with 51.
Include the next digit (0) from the dividend after 51, then repeat: 510 / 78

Let's proceed to step 4:
78 goes into 510 6 times with a remainder of 42.
Put 6 as the next digit of the answer. 
Result so far: 66.0
Subtract 468 from 510 to get 42.
Fetch the next digit (8) from the dividend, attach it to 42 and continue: 428 / 78

Step 5:
If we divide 428 by 78, we get 5 and a remainder of 38.
The next digit of our result is 5. 
Result so far: 665.0
If we take 390 away from 428, we end up with 38.
Fetch the next digit (1) from the dividend, attach it to 38 and continue: 381 / 78

On to step 6:
The number 78 fits into 381 4 times, leaving a remainder of 69.
The next digit of our result is 4. 
Result so far: 6654.0
If we subtract 312 from 381, we get 69.
Append the next digit (8) from the dividend to 69 and continue with: 698 / 78

Advancing to step 7:
When dividing 698 by 78, we get 8 with a remainder of 74.
The next digit of our result is 8. 
Result so far: 66548.0
The remainder is 74 after subtracting 624 from 698.
Bring next digit (4) of the dividend behind the 74 and repeat the process: 744 / 78

On to step 8:
The number 78 fits into 744 9 times, leaving a remainder of 42.
Use 9 as the next digit of our solution. 
Result so far: 665489.0
Subtract 702 from 744 to get 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Moving on to step 9:
78 goes into 420 5 times with a remainder of 30.
Use 5 as the next digit of our solution. 
Result so far: 665489.5
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 10:
When dividing 300 by 78, we get 3 with a remainder of 66.
Record the quotient 3 as the next digit in the result. 
Result so far: 665489.53
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.

Advancing to step 11:
If we divide 660 by 78, we get 8 and a remainder of 36.
The next digit of our result is 8. 
Result so far: 665489.538
If we take 624 away from 660, we end up 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.

Step 12:
If we divide 360 by 78, we get 4 and a remainder of 48.
Use 4 as the next digit of our solution. 
Result so far: 665489.5384
The remainder is 48 after subtracting 312 from 360.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Advancing to step 13:
78 can be fit into 480 6 times, resulting in a remainder of 12.
The number 6 becomes the next digit in our result. 
Result so far: 665489.53846
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.

Moving on to step 14:
78 goes into 120 1 times with a remainder of 42.
Put 1 as the next digit of the answer. 
Result so far: 665489.538461
Subtracting 78 from 120 leaves us 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.

Moving on to step 15:
78 goes into 420 5 times with a remainder of 30.
Write down 5 as next digit of the result. 
Result so far: 665489.5384615
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 16:
78 goes into 300 3 times with a remainder of 66.
Put 3 as the next digit of the answer. 
Result so far: 665489.53846153
Deduct 234 from 300 and we're left 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.

After the division, we end up with 665489.53846153 and a remainder of 6.6e-08.