Now it is your turn to calculate the properties of subnets that are allocated using VLSMs$.$

Imagine that an organization is assigned the IP address block defined by $237\mathrm{.}118\mathrm{.}0\mathrm{.}0/15,$ and that the organization needs one subnet that supports $400$ hosts, and another that supports $77$ hosts. The organization allocates the subnets$$ network identifiers as follows:

First subnet: $11101101011101100000000$

Second subnet: $1110110101110110000000100$

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Answer the following series of questions about both subnets. a$)$ How many bits are used by each subnet identifier?