It calls that all bit of binary is shifted on left and right logical shift. When it shifts logically, value changes as description below.
On the left n bit shift: It becomes 2 ntuple
On the right n bit shift: 2 the ntuple (the value which is divided with 2n) it becomes
Therefore, the bit just is shifted can do multiplication and division.
Example: Binary “0101” on the left 2 bit shifts
(The result which is shifted 2 ntuple (4 times) verification the thing which becomes)
Binary 

When it converts to decimal, “0101” > “5”
Binary on the left 2 bit shifts 

2 bits it shifts to the left, it inserts “0” into the bit which is less crowded
The result and 2 ntuple (4 times) “20” you can verify that is
Then, it will try solving the problem of logical shift and operation.
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