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Thanks a bunch!

Awesome, thanks!

Another meaning that I forgot to mention:

Let's say I'm looking in the kitchen for something to eat. I might say, "Let's see... what is there to eat?"
Or I'm looking in a...

These being two distinct phrases. Using the definitions found on Wiktionary:

let's see: used as a filled pause to indicating thinking or pondering, but allowing hearer to participate
let me see:...