We're dividing 346786 by 12 
We want to figure out the number of times 346786 can be divided by 12.

Let's proceed to step 1:
If we divide 3 by 12, we get 0 and a remainder of 3.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 3 leaves us with 3.
Bring next digit (4) of the dividend behind the 3 and repeat the process: 34 / 12

Moving on to step 2:
When dividing 34 by 12, we get 2 with a remainder of 10.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
The remainder is 10 after subtracting 24 from 34.
Append the next digit (6) from the dividend to 10 and continue with: 106 / 12

Moving on to step 3:
The number 12 fits into 106 8 times, leaving a remainder of 10.
Use 8 as the next digit of our solution. 
Result so far: 28.0
The remainder is 10 after subtracting 96 from 106.
Append the next digit (7) from the dividend to 10 and continue with: 107 / 12

Step 4:
The number 12 fits into 107 8 times, leaving a remainder of 11.
The number 8 becomes the next digit in our result. 
Result so far: 288.0
If we subtract 96 from 107, we get 11.
Include the next digit (8) from the dividend after 11, then repeat: 118 / 12

Moving on to step 5:
12 can be fit into 118 9 times, resulting in a remainder of 10.
Record the quotient 9 as the next digit in the result. 
Result so far: 2889.0
Subtract 108 from 118 to get 10.
Grab the next digit (6) from the dividend, add it to 10, then carry on: 106 / 12

Moving on to step 6:
The number 12 fits into 106 8 times, leaving a remainder of 10.
The number 8 becomes the next digit in our result. 
Result so far: 28898.0
If we subtract 96 from 106, we get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

On to step 7:
If we divide 100 by 12, we get 8 and a remainder of 4.
Put 8 as the next digit of the answer. 
Result so far: 28898.8
Subtracting 96 from 100 leaves us with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Step 8:
The number 12 fits into 40 3 times, leaving a remainder of 4.
Use 3 as the next digit of our solution. 
Result so far: 28898.83
Subtract 36 from 40 to get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

On to step 9:
12 can be fit into 40 3 times, resulting in a remainder of 4.
Record the quotient 3 as the next digit in the result. 
Result so far: 28898.833
Deduct 36 from 40 and we're left with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

The final outcome is 28898.833, with a leftover of 0.0004.