The idiom "as simple as that" is used to describe a situation or task that is very easy to understand or complete. It can also be used to indicate that something has been resolved quickly and easily.

The idiom "made it" has two meanings:

• To successfully accomplish or achieve something difficult or challenging.
• To pass a test, exam, or interview with good results.

"Divide and conquer" is an idiom that means to divide a problem or task into smaller parts and then solve each part individually. This approach can be used to tackle complex tasks by breaking them down into more manageable ones.

The idiom "once in a blue moon" means that something happens very rarely or almost never. It refers to a situation or event that is so unlikely to occur that it is considered a rare occurrence.

The idiom "card up sleeve" refers to a secret plan or strategy that is hidden from others, often used to deceive or mislead someone. The phrase comes from the traditional sleight-of-hand trick of hiding a card up one's sleeve, which makes it difficult for others to see what you are doing.