We're dividing 646537 by 50 
We want to figure out the number of times 646537 can be divided by 50.

Step 1:
If we divide 6 by 50, we get 0 and a remainder of 6.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 6, we end up with 6.
Fetch the next digit (4) from the dividend, attach it to 6 and continue: 64 / 50

Going ahead to step 2:
64 divided by 50 is 1 with a remainder of 14.
Write down 1 as next digit of the result. 
Result so far: 1.0
Deduct 50 from 64 and we're left with 14.
Include the next digit (6) from the dividend after 14, then repeat: 146 / 50

Let's proceed to step 3:
If we divide 146 by 50, we get 2 and a remainder of 46.
The next digit of our result is 2. 
Result so far: 12.0
Subtracting 100 from 146 leaves us with 46.
Grab the next digit (5) from the dividend, add it to 46, then carry on: 465 / 50

Advancing to step 4:
When dividing 465 by 50, we get 9 with a remainder of 15.
Put 9 as the next digit of the answer. 
Result so far: 129.0
Deduct 450 from 465 and we're left with 15.
Bring next digit (3) of the dividend behind the 15 and repeat the process: 153 / 50

On to step 5:
153 divided by 50 is 3 with a remainder of 3.
Put 3 as the next digit of the answer. 
Result so far: 1293.0
Deduct 150 from 153 and we're left with 3.
Take the next digit (7) from the dividend and append it to 3, then repeat: 37 / 50

Moving on to step 6:
50 can be fit into 37 0 times, resulting in a remainder of 37.
Write down 0 as next digit of the result. 
Result so far: 12930.0
If we subtract 0 from 37, we get 37.
Since there are no more digits in the dividend, we add a zero to the remainder making it 370, and continue the process.

Step 7:
The number 50 fits into 370 7 times, leaving a remainder of 20.
Put 7 as the next digit of the answer. 
Result so far: 12930.7
If we take 350 away from 370, 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.

Step 8:
200 divided by 50 is 4 with a remainder of 0.
Use 4 as the next digit of our solution. 
Result so far: 12930.74
Subtract 200 from 200 to 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.

Step 9:
If we divide 0 by 50, we get 0 and a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 12930.74
Subtract 0 from 0 to 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:
50 goes into 0 0 times with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 12930.74
Subtracting 0 from 0 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.

The final result is 12930.74 with a remainder of 0.0.