Answer: It's incorrect because 342 ÷ 6 = 57
Let's solve your problem step by step:
When you start dividing you notice that 6 goes into 3 zero times.
So then you see how many times 6 goes into 34. 6 goes into 34 exactly 5 times and you have a remainder of 4.
After that you bring down the 2 and you look at how many times 6 goes into 42. 6 goes into 42 exactly 7 times.
There is nothing left so you are left with the answer 57 which is your final answer.