Arithmetic circuit complexity is like playing with Legos, but with numbers instead. Imagine you have a bunch of blocks that have different numbers on them, and you want to do some math with them.
For example, let's say you want to add 2 + 3. You would take the block with 2 on it and put it next to the block with 3 on it, so you have 2 + 3 = 5. This is a very simple example, but arithmetic circuit complexity is all about figuring out the most efficient way to do math with lots of numbers.
Sometimes you might have to add a lot of numbers together, or multiply them, or divide them. The more numbers you have, the more blocks you need, and the longer it takes to build your math problem.
Arithmetic circuit complexity is all about figuring out how many blocks you need and how long it will take to build your math problem. It's like trying to find the most efficient way to put all the Legos together so that you can finish your project as quickly as possible.
It might sound complicated, but just like with Legos, the more you practice and figure out how to put things together efficiently, the better you'll become at doing arithmetic with lots of numbers.