Let's divide 399693 by 78
Our goal is to divide 399693 by 78.

Step 1:
3 divided by 78 is 0 with a remainder of 3.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 3 after subtracting 0 from 3.
Grab the next digit (9) from the dividend, add it to 3, then carry on: 39 / 78

Let's proceed to step 2:
78 goes into 39 0 times with a remainder of 39.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 39, we get 39.
Fetch the next digit (9) from the dividend, attach it to 39 and continue: 399 / 78

Advancing to step 3:
78 goes into 399 5 times with a remainder of 9.
Record the quotient 5 as the next digit in the result. 
Result so far: 5.0
If we subtract 390 from 399, we get 9.
Take the next digit (6) from the dividend and append it to 9, then repeat: 96 / 78

Step 4:
If we divide 96 by 78, we get 1 and a remainder of 18.
The next digit of our result is 1. 
Result so far: 51.0
Subtract 78 from 96 to get 18.
Bring next digit (9) of the dividend behind the 18 and repeat the process: 189 / 78

Going ahead to step 5:
When dividing 189 by 78, we get 2 with a remainder of 33.
Record the quotient 2 as the next digit in the result. 
Result so far: 512.0
If we subtract 156 from 189, we get 33.
Take the next digit (3) from the dividend and append it to 33, then repeat: 333 / 78

Step 6:
If we divide 333 by 78, we get 4 and a remainder of 21.
Record the quotient 4 as the next digit in the result. 
Result so far: 5124.0
If we subtract 312 from 333, we get 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

On to step 7:
The number 78 fits into 210 2 times, leaving a remainder of 54.
Put 2 as the next digit of the answer. 
Result so far: 5124.2
Subtracting 156 from 210 leaves us with 54.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

Let's proceed to step 8:
78 goes into 540 6 times with a remainder of 72.
Put 6 as the next digit of the answer. 
Result so far: 5124.26
The remainder is 72 after subtracting 468 from 540.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

Let's proceed to step 9:
The number 78 fits into 720 9 times, leaving a remainder of 18.
Put 9 as the next digit of the answer. 
Result so far: 5124.269
If we subtract 702 from 720, we get 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

On to step 10:
180 divided by 78 is 2 with a remainder of 24.
The next digit of our result is 2. 
Result so far: 5124.2692
The remainder is 24 after subtracting 156 from 180.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Going ahead to step 11:
78 goes into 240 3 times with a remainder of 6.
The next digit of our result is 3. 
Result so far: 5124.26923
If we take 234 away from 240, we end up with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Step 12:
78 goes into 60 0 times with a remainder of 60.
Use 0 as the next digit of our solution. 
Result so far: 5124.26923
If we subtract 0 from 60, we get 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Let's proceed to step 13:
When dividing 600 by 78, we get 7 with a remainder of 54.
The number 7 becomes the next digit in our result. 
Result so far: 5124.2692307
Subtract 546 from 600 to get 54.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

On to step 14:
540 divided by 78 is 6 with a remainder of 72.
The next digit of our result is 6. 
Result so far: 5124.26923076
Subtract 468 from 540 to get 72.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

In conclusion, the division gives 5124.26923076 with a balance of 7.2e-08.