"How to ..." and " How do you..."
How do you solve this problem?
How do you say this in English?
How do you get sugar out of this solution?
How do you make cornflakes at home?

In all these questions listed above, can I change "How do you..." into "How to ..." ? if not, in what satuation do you use "How to ..." to begin a question?

Question

"How to ..." and " How do you..."
How do you solve this problem?
How do you say this in English?
How do you get sugar out of this solution?
How do you make cornflakes at home?

In all these questions listed above, can I change "How do you..." into "How to ..." ?  if not, in what satuation do you use "How to ..." to begin a question?

Answer

You use "how do you..." when you're talking to someone directly (e.g. to a friend, "how do you do that?!"). I usually use "how to..." when I'm searching for something online trying to find out how to do something (e.g. searching in google: "how to dunk").

Answer

Use 'how to' if you say any question for yourself.
and use 'how do you' if you give any question for anyone (person).

i think that's all.

Answer

How do you is a simple sentence.
how to, is it a clause or a phrase?