Tell me what are bitwise shift operators?

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<< - Bitwise Left-Shift
Bitwise Left-Shift is useful when to want to MULTIPLY an integer (not floating point numbers) by a power of 2.
Expression: a << b
This expression returns the value of a multiplied by 2 to the power of b.

>> - Bitwise Right-Shift
Bitwise Right-Shift does the opposite, and takes away bits on the right.
Expression: a >> b
This expression returns the value of a divided by 2 to the power of b.
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