We're dividing 621670 by 50 
We're looking to find how many times 50 goes into 621670.

On to step 1:
50 goes into 6 0 times with a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 6 to get 6.
Include the next digit (2) from the dividend after 6, then repeat: 62 / 50

Advancing to step 2:
50 goes into 62 1 times with a remainder of 12.
Put 1 as the next digit of the answer. 
Result so far: 1.0
If we take 50 away from 62, we end up with 12.
Take the next digit (1) from the dividend and append it to 12, then repeat: 121 / 50

Step 3:
If we divide 121 by 50, we get 2 and a remainder of 21.
Write down 2 as next digit of the result. 
Result so far: 12.0
Deduct 100 from 121 and we're left with 21.
Include the next digit (6) from the dividend after 21, then repeat: 216 / 50

Let's proceed to step 4:
50 goes into 216 4 times with a remainder of 16.
The number 4 becomes the next digit in our result. 
Result so far: 124.0
If we subtract 200 from 216, we get 16.
Fetch the next digit (7) from the dividend, attach it to 16 and continue: 167 / 50

On to step 5:
50 can be fit into 167 3 times, resulting in a remainder of 17.
Use 3 as the next digit of our solution. 
Result so far: 1243.0
If we take 150 away from 167, we end up with 17.
Bring next digit (0) of the dividend behind the 17 and repeat the process: 170 / 50

Step 6:
170 divided by 50 is 3 with a remainder of 20.
Put 3 as the next digit of the answer. 
Result so far: 12433.0
If we take 150 away from 170, we end up with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

On to step 7:
If we divide 200 by 50, we get 4 and a remainder of 0.
Write down 4 as next digit of the result. 
Result so far: 12433.4
Subtracting 200 from 200 leaves us with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Moving on to step 8:
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: 12433.4
If we take 0 away from 0, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Advancing to step 9:
The number 50 fits into 0 0 times, leaving a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 12433.4
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.

Our division results in 12433.4 with a remaining 0.0.