78709264 divided by 399 
We're looking to find how many times 399 goes into 78709264.

Moving on to step 1:
When dividing 7 by 399, we get 0 with a remainder of 7.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 7 and we're left with 7.
Grab the next digit (8) from the dividend, add it to 7, then carry on: 78 / 399

Let's proceed to step 2:
When dividing 78 by 399, we get 0 with a remainder of 78.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 78 to get 78.
Include the next digit (7) from the dividend after 78, then repeat: 787 / 399

Let's proceed to step 3:
When dividing 787 by 399, we get 1 with a remainder of 388.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Subtracting 399 from 787 leaves us with 388.
Fetch the next digit (0) from the dividend, attach it to 388 and continue: 3880 / 399

Step 4:
If we divide 3880 by 399, we get 9 and a remainder of 289.
Use 9 as the next digit of our solution. 
Result so far: 19.0
The remainder is 289 after subtracting 3591 from 3880.
Bring next digit (9) of the dividend behind the 289 and repeat the process: 2899 / 399

On to step 5:
When dividing 2899 by 399, we get 7 with a remainder of 106.
Record the quotient 7 as the next digit in the result. 
Result so far: 197.0
If we take 2793 away from 2899, we end up with 106.
Append the next digit (2) from the dividend to 106 and continue with: 1062 / 399

Going ahead to step 6:
If we divide 1062 by 399, we get 2 and a remainder of 264.
The number 2 becomes the next digit in our result. 
Result so far: 1972.0
If we take 798 away from 1062, we end up with 264.
Include the next digit (6) from the dividend after 264, then repeat: 2646 / 399

Going ahead to step 7:
When dividing 2646 by 399, we get 6 with a remainder of 252.
Record the quotient 6 as the next digit in the result. 
Result so far: 19726.0
Subtracting 2394 from 2646 leaves us with 252.
Take the next digit (4) from the dividend and append it to 252, then repeat: 2524 / 399

On to step 8:
When dividing 2524 by 399, we get 6 with a remainder of 130.
Record the quotient 6 as the next digit in the result. 
Result so far: 197266.0
If we subtract 2394 from 2524, we get 130.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1300, and continue the process.

Going ahead to step 9:
The number 399 fits into 1300 3 times, leaving a remainder of 103.
Record the quotient 3 as the next digit in the result. 
Result so far: 197266.3
If we take 1197 away from 1300, we end up with 103.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1030, and continue the process.

Going ahead to step 10:
The number 399 fits into 1030 2 times, leaving a remainder of 232.
Record the quotient 2 as the next digit in the result. 
Result so far: 197266.32
Deduct 798 from 1030 and we're left with 232.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2320, and continue the process.

Going ahead to step 11:
2320 divided by 399 is 5 with a remainder of 325.
Write down 5 as next digit of the result. 
Result so far: 197266.325
Deduct 1995 from 2320 and we're left with 325.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3250, and continue the process.

Advancing to step 12:
399 goes into 3250 8 times with a remainder of 58.
Write down 8 as next digit of the result. 
Result so far: 197266.3258
If we subtract 3192 from 3250, we get 58.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

Step 13:
399 goes into 580 1 times with a remainder of 181.
Use 1 as the next digit of our solution. 
Result so far: 197266.32581
The remainder is 181 after subtracting 399 from 580.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1810, and continue the process.

Let's proceed to step 14:
399 can be fit into 1810 4 times, resulting in a remainder of 214.
Put 4 as the next digit of the answer. 
Result so far: 197266.325814
Subtract 1596 from 1810 to get 214.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2140, and continue the process.

Moving on to step 15:
2140 divided by 399 is 5 with a remainder of 145.
Write down 5 as next digit of the result. 
Result so far: 197266.3258145
Deduct 1995 from 2140 and we're left with 145.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1450, and continue the process.

On to step 16:
1450 divided by 399 is 3 with a remainder of 253.
Write down 3 as next digit of the result. 
Result so far: 197266.32581453
Subtracting 1197 from 1450 leaves us with 253.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2530, and continue the process.

After the division, we end up with 197266.32581453 and a remainder of 2.53e-07.