We're dividing 789438 by 3 
We want to figure out the number of times 789438 can be divided by 3.

Advancing to step 1:
3 can be fit into 7 2 times, resulting in a remainder of 1.
The next digit of our result is 2. 
Result so far: 2.0
Deduct 6 from 7 and we're left with 1.
Append the next digit (8) from the dividend to 1 and continue with: 18 / 3

On to step 2:
The number 3 fits into 18 6 times, leaving a remainder of 0.
Use 6 as the next digit of our solution. 
Result so far: 26.0
If we take 18 away from 18, we end up with 0.
Grab the next digit (9) from the dividend, add it to 0, then carry on: 9 / 3

Step 3:
When dividing 9 by 3, we get 3 with a remainder of 0.
Use 3 as the next digit of our solution. 
Result so far: 263.0
If we take 9 away from 9, we end up with 0.
Fetch the next digit (4) from the dividend, attach it to 0 and continue: 4 / 3

Moving on to step 4:
4 divided by 3 is 1 with a remainder of 1.
The next digit of our result is 1. 
Result so far: 2631.0
Subtract 3 from 4 to get 1.
Bring next digit (3) of the dividend behind the 1 and repeat the process: 13 / 3

Moving on to step 5:
If we divide 13 by 3, we get 4 and a remainder of 1.
The number 4 becomes the next digit in our result. 
Result so far: 26314.0
Subtract 12 from 13 to get 1.
Append the next digit (8) from the dividend to 1 and continue with: 18 / 3

Going ahead to step 6:
3 goes into 18 6 times with a remainder of 0.
Use 6 as the next digit of our solution. 
Result so far: 263146.0
Deduct 18 from 18 and we're left 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.

Step 7:
3 goes into 0 0 times with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 263146.0
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.

Step 8:
The number 3 fits into 0 0 times, leaving a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 263146.0
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 263146.0 with a remainder of 0.0.