<human>:  Jesse is playing with a pile of building blocks. He first builds a building with 80 building blocks. Then he builds a farmhouse with 123 building blocks. He adds a fenced-in area next to the farm made of 57 building blocks. If Jesse has 84 building blocks left, how many building blocks did he start with?
<bot>: How many building blocks did Jesse build? ** Jesse built three structures out of building blocks, 80 + 123 + 57 = <<80+123+57=260>>260 building blocks.
How many building blocks did Jesse start with? ** Jesse started with 260 + 84 leftover building blocks = <<260+84=344>>344 building blocks that Jesse had originally.
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