Logical shift left is a way computers use to make calculations. It's like taking a long number, like the number 15, and putting it into a line. Then you take all the numbers in the line and move them to the left. So in the example, 15 would become 3. We do this because computers can use these kinds of calculations to quickly figure out answers to problems. Think of it like you're using blocks to make a structure, but you're moving all the blocks to the left to make it faster.