We look at the division of 345994 by 3 
Let's see how many times 3 fits into 345994.

On to step 1:
3 can be fit into 3 1 times, resulting in a remainder of 0.
Write down 1 as next digit of the result. 
Result so far: 1.0
The remainder is 0 after subtracting 3 from 3.
Include the next digit (4) from the dividend after 0, then repeat: 4 / 3

Advancing to step 2:
3 can be fit into 4 1 times, resulting in a remainder of 1.
Put 1 as the next digit of the answer. 
Result so far: 11.0
Deduct 3 from 4 and we're left with 1.
Bring next digit (5) of the dividend behind the 1 and repeat the process: 15 / 3

Step 3:
The number 3 fits into 15 5 times, leaving a remainder of 0.
The next digit of our result is 5. 
Result so far: 115.0
The remainder is 0 after subtracting 15 from 15.
Fetch the next digit (9) from the dividend, attach it to 0 and continue: 9 / 3

Going ahead to step 4:
3 can be fit into 9 3 times, resulting in a remainder of 0.
The next digit of our result is 3. 
Result so far: 1153.0
If we subtract 9 from 9, we get 0.
Fetch the next digit (9) from the dividend, attach it to 0 and continue: 9 / 3

Moving on to step 5:
9 divided by 3 is 3 with a remainder of 0.
The number 3 becomes the next digit in our result. 
Result so far: 11533.0
Deduct 9 from 9 and we're left with 0.
Include the next digit (4) from the dividend after 0, then repeat: 4 / 3

Let's proceed to step 6:
3 can be fit into 4 1 times, resulting in a remainder of 1.
Write down 1 as next digit of the result. 
Result so far: 115331.0
Deduct 3 from 4 and we're left 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.

Going ahead to step 7:
3 goes into 10 3 times with a remainder of 1.
Record the quotient 3 as the next digit in the result. 
Result so far: 115331.3
The remainder is 1 after subtracting 9 from 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Step 8:
If we divide 10 by 3, we get 3 and a remainder of 1.
Record the quotient 3 as the next digit in the result. 
Result so far: 115331.33
Deduct 9 from 10 and we're left 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.

Our division results in 115331.33 with a remaining 0.001.