We're dividing 609909 by 51 
Our goal is to divide 609909 by 51.

Step 1:
When dividing 6 by 51, we get 0 with a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 6 to get 6.
Fetch the next digit (0) from the dividend, attach it to 6 and continue: 60 / 51

Moving on to step 2:
The number 51 fits into 60 1 times, leaving a remainder of 9.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Deduct 51 from 60 and we're left with 9.
Bring next digit (9) of the dividend behind the 9 and repeat the process: 99 / 51

On to step 3:
99 divided by 51 is 1 with a remainder of 48.
Record the quotient 1 as the next digit in the result. 
Result so far: 11.0
If we take 51 away from 99, we end up with 48.
Append the next digit (9) from the dividend to 48 and continue with: 489 / 51

Going ahead to step 4:
51 goes into 489 9 times with a remainder of 30.
Put 9 as the next digit of the answer. 
Result so far: 119.0
Deduct 459 from 489 and we're left with 30.
Bring next digit (0) of the dividend behind the 30 and repeat the process: 300 / 51

On to step 5:
300 divided by 51 is 5 with a remainder of 45.
Use 5 as the next digit of our solution. 
Result so far: 1195.0
If we subtract 255 from 300, we get 45.
Fetch the next digit (9) from the dividend, attach it to 45 and continue: 459 / 51

Step 6:
459 divided by 51 is 9 with a remainder of 0.
The number 9 becomes the next digit in our result. 
Result so far: 11959.0
If we take 459 away from 459, 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.

Let's proceed to step 7:
If we divide 0 by 51, we get 0 and a remainder of 0.
The next digit of our result is 0. 
Result so far: 11959.0
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.

Moving on to step 8:
51 goes into 0 0 times with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 11959.0
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.

The final outcome is 11959.0, with a leftover of 0.0.