For comparison For comparison, The Force Awakens opened to $52.3 million en route to $124.1 million in China, while Rogue One opened to $30 million en route to nearly $70 million. First of all, should we use "By comparison" instead of "For comparison"? And what does "open to" mean in this sentence， and is “en route" used right in this context?

the phrase "debut to" The Last Jedi debuted to a disappointing $28.7 million in China last week and sank like James Cameron’s Titanic to just $2.4 million in week two, per Box Office Mojo. Is “debut to" a common expression? And it is properly expressed?

The number of questions you can ask every day We can only ask tow questions every day in italki? If so, what should we do to raise the limit?

the phrase "in the best light" That doesn't paint me in the best light. Is this a common expression? Does the word "paint" used proper in this sentence? Should I use "portray" instead?

the phrase "know my way around" So clearly I know my way around tiny things. Is this a common expression? What does "know my way around" mean? How can I use it?

the word "which" Pence's visit comes four months after Trump unveiled a new strategy for Afghanistan which he told the troops was "already bearing fruit". I don't know in this sentence what does "which" modifies, "a new strategy" or "Afghanistan"?

what does "up and going" mean I looked up the phrase in the dictionary, but I can't find a proper explanation.

Is this idiom right? I heard a sentence "he is talking out of both sides of his mouth". What does this mean??