Problem $3$:

$\backslash$table$[[$Given:$],[$Host IP Address:,$172\mathrm{.}22\mathrm{.}32\mathrm{.}12],[$Original Subnet Mask,$255\mathrm{.}255\mathrm{.}0\mathrm{.}0],[$New Subnet Mask:,$255\mathrm{.}255\mathrm{.}224\mathrm{.}0]]$

$\backslash$table$[[$Find:$],[$Number of Subnet Bits,$],[$Number of Subnets Created,$],[$Number of Host Bits per Subnet,$],[$Number of Hosts per Subnet,$]]$