We're dividing 7077814 by 399 
We want to divide 7077814 by 399.

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
Subtracting 0 from 7 leaves us with 7.
Fetch the next digit (0) from the dividend, attach it to 7 and continue: 70 / 399

On to step 2:
70 divided by 399 is 0 with a remainder of 70.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 70 leaves us with 70.
Append the next digit (7) from the dividend to 70 and continue with: 707 / 399

On to step 3:
When dividing 707 by 399, we get 1 with a remainder of 308.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Deduct 399 from 707 and we're left with 308.
Append the next digit (7) from the dividend to 308 and continue with: 3087 / 399

Step 4:
3087 divided by 399 is 7 with a remainder of 294.
Write down 7 as next digit of the result. 
Result so far: 17.0
The remainder is 294 after subtracting 2793 from 3087.
Bring next digit (8) of the dividend behind the 294 and repeat the process: 2948 / 399

Advancing to step 5:
399 goes into 2948 7 times with a remainder of 155.
The number 7 becomes the next digit in our result. 
Result so far: 177.0
If we subtract 2793 from 2948, we get 155.
Take the next digit (1) from the dividend and append it to 155, then repeat: 1551 / 399

Step 6:
399 goes into 1551 3 times with a remainder of 354.
The number 3 becomes the next digit in our result. 
Result so far: 1773.0
Deduct 1197 from 1551 and we're left with 354.
Take the next digit (4) from the dividend and append it to 354, then repeat: 3544 / 399

Step 7:
399 goes into 3544 8 times with a remainder of 352.
The next digit of our result is 8. 
Result so far: 17738.0
Subtract 3192 from 3544 to get 352.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3520, and continue the process.

Let's proceed to step 8:
399 can be fit into 3520 8 times, resulting in a remainder of 328.
Record the quotient 8 as the next digit in the result. 
Result so far: 17738.8
The remainder is 328 after subtracting 3192 from 3520.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3280, and continue the process.

Step 9:
399 can be fit into 3280 8 times, resulting in a remainder of 88.
Record the quotient 8 as the next digit in the result. 
Result so far: 17738.88
Subtract 3192 from 3280 to get 88.
Since there are no more digits in the dividend, we add a zero to the remainder making it 880, and continue the process.

After the division, we end up with 17738.88 and a remainder of 0.088.