Misc: How can I use the bit shift left operation?

When bit shifting, the scope is at byte level so I cannot do more than 8 bits. Otherwise, I always get a 0.

For example, when the input is 1, shifting 7 bytes to the left works as expected. At least, I have a non-null result:
https://gchq.github.io/CyberChef/#recipe=Bit_shift_left(7)To_Hex('Space',0)&input=MQ

However, when the bit shift is greater than 7 I get 0:
https://gchq.github.io/CyberChef/#recipe=Bit_shift_left(9)To_Hex('Space',0)&input=MQ

But 1 << 9 = 512, as you can check on https://bit-calculator.com/bit-shift-calculator

How can I get that in cyberchef? Is there any documentation where I can look at to understand how the numbers are stored? Sometimes they are stored in "bytes", sometimes in regular number.

Start with the Bit shift left operation and the two linked CyberChef recipes, then review any user-facing documentation for how input bytes and numeric values are represented. Clarify the behavior for shifts above seven bits and use the examples to verify that the explanation matches the operation.

Written by the indexing model from the issue text.