We're dividing 501949 by 3 
Let's see how many times 3 fits into 501949.

On to step 1:
When dividing 5 by 3, we get 1 with a remainder of 2.
Write down 1 as next digit of the result. 
Result so far: 1.0
Subtract 3 from 5 to get 2.
Bring next digit (0) of the dividend behind the 2 and repeat the process: 20 / 3

On to step 2:
The number 3 fits into 20 6 times, leaving a remainder of 2.
Use 6 as the next digit of our solution. 
Result so far: 16.0
Subtract 18 from 20 to get 2.
Bring next digit (1) of the dividend behind the 2 and repeat the process: 21 / 3

Step 3:
If we divide 21 by 3, we get 7 and a remainder of 0.
Use 7 as the next digit of our solution. 
Result so far: 167.0
Subtracting 21 from 21 leaves us with 0.
Grab the next digit (9) from the dividend, add it to 0, then carry on: 9 / 3

Going ahead to step 4:
3 goes into 9 3 times with a remainder of 0.
The next digit of our result is 3. 
Result so far: 1673.0
Subtract 9 from 9 to get 0.
Grab the next digit (4) from the dividend, add it to 0, then carry on: 4 / 3

Advancing to step 5:
4 divided by 3 is 1 with a remainder of 1.
The next digit of our result is 1. 
Result so far: 16731.0
Deduct 3 from 4 and we're left with 1.
Bring next digit (9) of the dividend behind the 1 and repeat the process: 19 / 3

On to step 6:
When dividing 19 by 3, we get 6 with a remainder of 1.
The number 6 becomes the next digit in our result. 
Result so far: 167316.0
Subtracting 18 from 19 leaves us with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Moving on to step 7:
10 divided by 3 is 3 with a remainder of 1.
Use 3 as the next digit of our solution. 
Result so far: 167316.3
Subtracting 9 from 10 leaves us with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Let's proceed to step 8:
When dividing 10 by 3, we get 3 with a remainder of 1.
The next digit of our result is 3. 
Result so far: 167316.33
If we subtract 9 from 10, we get 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

The final outcome is 167316.33, with a leftover of 0.001.