An ISP is granted a block of addresses starting with 150.80.0.0/16. The ISP want

An ISP is granted a block of addresses starting with 150.80.0.0/16. The ISP wants to distribute these blocks to 2600 customers as follows.
a) 200 medium size businesses; each needs 16 addresses
b) 400 small businesses; each needs 8 addresses
c) 2000 households; each needs 4 addresses
Design the subblocks and give the slash notation for each subblock. Find out how many addresses are still available after these allocations.

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