390391 ÷ 50 
We want to figure out the number of times 390391 can be divided by 50.

Going ahead to step 1:
If we divide 3 by 50, we get 0 and a remainder of 3.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 3 and we're left with 3.
Take the next digit (9) from the dividend and append it to 3, then repeat: 39 / 50

Let's proceed to step 2:
50 goes into 39 0 times with a remainder of 39.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 39, we end up with 39.
Fetch the next digit (0) from the dividend, attach it to 39 and continue: 390 / 50

On to step 3:
50 can be fit into 390 7 times, resulting in a remainder of 40.
Use 7 as the next digit of our solution. 
Result so far: 7.0
If we take 350 away from 390, we end up with 40.
Append the next digit (3) from the dividend to 40 and continue with: 403 / 50

Going ahead to step 4:
50 goes into 403 8 times with a remainder of 3.
Put 8 as the next digit of the answer. 
Result so far: 78.0
If we subtract 400 from 403, we get 3.
Fetch the next digit (9) from the dividend, attach it to 3 and continue: 39 / 50

Let's proceed to step 5:
If we divide 39 by 50, we get 0 and a remainder of 39.
Record the quotient 0 as the next digit in the result. 
Result so far: 780.0
Subtract 0 from 39 to get 39.
Bring next digit (1) of the dividend behind the 39 and repeat the process: 391 / 50

Going ahead to step 6:
391 divided by 50 is 7 with a remainder of 41.
Record the quotient 7 as the next digit in the result. 
Result so far: 7807.0
The remainder is 41 after subtracting 350 from 391.
Since there are no more digits in the dividend, we add a zero to the remainder making it 410, and continue the process.

Advancing to step 7:
50 goes into 410 8 times with a remainder of 10.
Put 8 as the next digit of the answer. 
Result so far: 7807.8
Subtracting 400 from 410 leaves us with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Let's proceed to step 8:
When dividing 100 by 50, we get 2 with a remainder of 0.
Put 2 as the next digit of the answer. 
Result so far: 7807.82
If we subtract 100 from 100, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Let's proceed to step 9:
0 divided by 50 is 0 with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 7807.82
If we subtract 0 from 0, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

On to step 10:
When dividing 0 by 50, we get 0 with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 7807.82
The remainder is 0 after subtracting 0 from 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The quotient of the division is 7807.82, and the remainder is 0.0.