A 1000-byte IP datagram arrives at the router. This packet must be sent by the router to a network with an MTU of 100 bytes. Assume that the IP header is 20 bytes long. What is the size of the last...

A 1000-byte IP datagram arrives at the router. This packet must be sent by the router to a network with an MTU of 100 bytes. Assume that the IP header is 20 bytes long. What is the size of the last fragment and how many pieces will the router create?