We look at the division of 423474 by 34 
We're looking to find how many times 34 goes into 423474.

Let's proceed to step 1:
The number 34 fits into 4 0 times, leaving a remainder of 4.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 4 leaves us with 4.
Grab the next digit (2) from the dividend, add it to 4, then carry on: 42 / 34

Advancing to step 2:
34 goes into 42 1 times with a remainder of 8.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
The remainder is 8 after subtracting 34 from 42.
Grab the next digit (3) from the dividend, add it to 8, then carry on: 83 / 34

Going ahead to step 3:
34 goes into 83 2 times with a remainder of 15.
The next digit of our result is 2. 
Result so far: 12.0
Subtract 68 from 83 to get 15.
Append the next digit (4) from the dividend to 15 and continue with: 154 / 34

Let's proceed to step 4:
154 divided by 34 is 4 with a remainder of 18.
Use 4 as the next digit of our solution. 
Result so far: 124.0
If we take 136 away from 154, we end up with 18.
Take the next digit (7) from the dividend and append it to 18, then repeat: 187 / 34

Going ahead to step 5:
34 goes into 187 5 times with a remainder of 17.
Write down 5 as next digit of the result. 
Result so far: 1245.0
If we take 170 away from 187, we end up with 17.
Append the next digit (4) from the dividend to 17 and continue with: 174 / 34

Going ahead to step 6:
34 goes into 174 5 times with a remainder of 4.
Record the quotient 5 as the next digit in the result. 
Result so far: 12455.0
Deduct 170 from 174 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.

Moving on to step 7:
When dividing 40 by 34, we get 1 with a remainder of 6.
Record the quotient 1 as the next digit in the result. 
Result so far: 12455.1
Subtracting 34 from 40 leaves us with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Step 8:
34 goes into 60 1 times with a remainder of 26.
Use 1 as the next digit of our solution. 
Result so far: 12455.11
If we take 34 away from 60, we end up with 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

The final result is 12455.11 with a remainder of 0.026.