URGENT. i have a 1 hour deadline please help i will upvote for sure

1-Based on the topology, how many subnets are required? 2- How many bits must be borrowed to support the number of subnets in the above logical topology? 3- How many subnets does the borrowed bits create? 4- What subnet mask will be assigned to all devices? 5- How many usable host addresses does this subnetting create in each subnet? 6- What will be the first usable IP address and the broadcast IP address of the 1st subnet?

You have to subnet the network 192.168.160.0/21 into a number of equal size subnets based on the below logical topology. Switcho PCO G0/0 G0/1 Switch1 Routero G0/2 PC1 Switch2 PC2