PLEASE EXPLAIN$/$SHOW ALL WORK

$1.$ What is the last valid host on the subnetwork $192\mathrm{.}168\mathrm{.}170\mathrm{.}224255\mathrm{.}255\mathrm{.}255\mathrm{.}224?$

$2.$ Which subnet does host $192\mathrm{.}168\mathrm{.}85\mathrm{.}21/27$ belong to$?$

$3.$ Which subnet does host $10\mathrm{.}200\mathrm{.}126\mathrm{.}214255\mathrm{.}255\mathrm{.}240\mathrm{.}0$ belong to$?$

$4.$ What is the last valid host on the subnetwork $172\mathrm{.}30\mathrm{.}72\mathrm{.}0255\mathrm{.}255\mathrm{.}248\mathrm{.}0?$

$5.$ Which subnet does host $172\mathrm{.}25\mathrm{.}227\mathrm{.}106/23$ belong to$?$

$6.$ What valid host range is the IP address $172\mathrm{.}17\mathrm{.}108\mathrm{.}145/23$ a part of$?$

$7.$ What is the broadcast address of the network $192\mathrm{.}168\mathrm{.}65\mathrm{.}232/29?$

$8.$ What is the last valid host on the subnetwork $172\mathrm{.}26\mathrm{.}192\mathrm{.}0255\mathrm{.}255\mathrm{.}240\mathrm{.}0?$

$9.$ What is the last valid host on the subnetwork $172\mathrm{.}26\mathrm{.}250\mathrm{.}0/23?$

$10.$ Which subnet does host $172\mathrm{.}27\mathrm{.}62\mathrm{.}232255\mathrm{.}255\mathrm{.}248\mathrm{.}0$ belong to$?$

$11.$ What valid host range is the IP address $172\mathrm{.}18\mathrm{.}54\mathrm{.}23/28$ a part of$?$

$12.$ Which subnet does host $172\mathrm{.}28\mathrm{.}101\mathrm{.}60255\mathrm{.}255\mathrm{.}255\mathrm{.}240$ belong to$?$

$13.$ Which subnet does host $172\mathrm{.}28\mathrm{.}123\mathrm{.}34255\mathrm{.}255\mathrm{.}254\mathrm{.}0$ belong to$?$

$14.$ What is the broadcast address of the network $172\mathrm{.}30\mathrm{.}173\mathrm{.}80255\mathrm{.}255\mathrm{.}255\mathrm{.}240?$

$15.$ What is the first valid host on the subnetwork that the node

$172\mathrm{.}29\mathrm{.}57\mathrm{.}237255\mathrm{.}255\mathrm{.}254\mathrm{.}0$ belongs to$?$