78404178 divided by 51 
We're looking to find how many times 51 goes into 78404178.

On to step 1:
51 goes into 7 0 times with a remainder of 7.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 7, we get 7.
Grab the next digit (8) from the dividend, add it to 7, then carry on: 78 / 51

Step 2:
If we divide 78 by 51, we get 1 and a remainder of 27.
The next digit of our result is 1. 
Result so far: 1.0
If we take 51 away from 78, we end up with 27.
Take the next digit (4) from the dividend and append it to 27, then repeat: 274 / 51

Step 3:
274 divided by 51 is 5 with a remainder of 19.
Put 5 as the next digit of the answer. 
Result so far: 15.0
Subtracting 255 from 274 leaves us with 19.
Fetch the next digit (0) from the dividend, attach it to 19 and continue: 190 / 51

On to step 4:
51 goes into 190 3 times with a remainder of 37.
Write down 3 as next digit of the result. 
Result so far: 153.0
If we take 153 away from 190, we end up with 37.
Take the next digit (4) from the dividend and append it to 37, then repeat: 374 / 51

Moving on to step 5:
51 goes into 374 7 times with a remainder of 17.
Use 7 as the next digit of our solution. 
Result so far: 1537.0
Subtract 357 from 374 to get 17.
Append the next digit (1) from the dividend to 17 and continue with: 171 / 51

On to step 6:
51 can be fit into 171 3 times, resulting in a remainder of 18.
Put 3 as the next digit of the answer. 
Result so far: 15373.0
Deduct 153 from 171 and we're left with 18.
Bring next digit (7) of the dividend behind the 18 and repeat the process: 187 / 51

Advancing to step 7:
51 can be fit into 187 3 times, resulting in a remainder of 34.
Put 3 as the next digit of the answer. 
Result so far: 153733.0
If we take 153 away from 187, we end up with 34.
Fetch the next digit (8) from the dividend, attach it to 34 and continue: 348 / 51

On to step 8:
If we divide 348 by 51, we get 6 and a remainder of 42.
The number 6 becomes the next digit in our result. 
Result so far: 1537336.0
If we subtract 306 from 348, we 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.

Let's proceed to step 9:
51 goes into 420 8 times with a remainder of 12.
Use 8 as the next digit of our solution. 
Result so far: 1537336.8
If we subtract 408 from 420, we 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 10:
If we divide 120 by 51, we get 2 and a remainder of 18.
Record the quotient 2 as the next digit in the result. 
Result so far: 1537336.82
Deduct 102 from 120 and we're left with 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Let's proceed to step 11:
If we divide 180 by 51, we get 3 and a remainder of 27.
Use 3 as the next digit of our solution. 
Result so far: 1537336.823
Subtract 153 from 180 to get 27.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

Step 12:
51 goes into 270 5 times with a remainder of 15.
Write down 5 as next digit of the result. 
Result so far: 1537336.8235
Subtract 255 from 270 to get 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Going ahead to step 13:
51 goes into 150 2 times with a remainder of 48.
The next digit of our result is 2. 
Result so far: 1537336.82352
Subtracting 102 from 150 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.

Going ahead to step 14:
When dividing 480 by 51, we get 9 with a remainder of 21.
Write down 9 as next digit of the result. 
Result so far: 1537336.823529
The remainder is 21 after subtracting 459 from 480.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Let's proceed to step 15:
If we divide 210 by 51, we get 4 and a remainder of 6.
The number 4 becomes the next digit in our result. 
Result so far: 1537336.8235294
The remainder is 6 after subtracting 204 from 210.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Moving on to step 16:
When dividing 60 by 51, we get 1 with a remainder of 9.
Write down 1 as next digit of the result. 
Result so far: 1537336.82352941
Subtracting 51 from 60 leaves us with 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

The final result is 1537336.82352941 with a remainder of 9e-09.