We're dividing 128217 by 3 
We want to figure out the number of times 128217 can be divided by 3.

On to step 1:
If we divide 1 by 3, we get 0 and a remainder of 1.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 1, we get 1.
Append the next digit (2) from the dividend to 1 and continue with: 12 / 3

Advancing to step 2:
12 divided by 3 is 4 with a remainder of 0.
The next digit of our result is 4. 
Result so far: 4.0
Subtract 12 from 12 to get 0.
Append the next digit (8) from the dividend to 0 and continue with: 8 / 3

On to step 3:
3 can be fit into 8 2 times, resulting in a remainder of 2.
Put 2 as the next digit of the answer. 
Result so far: 42.0
Deduct 6 from 8 and we're left with 2.
Append the next digit (2) from the dividend to 2 and continue with: 22 / 3

Advancing to step 4:
22 divided by 3 is 7 with a remainder of 1.
The number 7 becomes the next digit in our result. 
Result so far: 427.0
The remainder is 1 after subtracting 21 from 22.
Fetch the next digit (1) from the dividend, attach it to 1 and continue: 11 / 3

Going ahead to step 5:
The number 3 fits into 11 3 times, leaving a remainder of 2.
The next digit of our result is 3. 
Result so far: 4273.0
Subtract 9 from 11 to get 2.
Grab the next digit (7) from the dividend, add it to 2, then carry on: 27 / 3

Moving on to step 6:
3 goes into 27 9 times with a remainder of 0.
Record the quotient 9 as the next digit in the result. 
Result so far: 42739.0
If we take 27 away from 27, 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.

Moving on to step 7:
3 goes into 0 0 times with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 42739.0
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.

Let's proceed to step 8:
If we divide 0 by 3, we get 0 and a remainder of 0.
The next digit of our result is 0. 
Result so far: 42739.0
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.

The final result is 42739.0 with a remainder of 0.0.