The Producers is a musical adapted by Mel Brooks and Thomas Meehan from Brooks' 1968 film of the same name, with lyrics written by Brooks and music composed by Brooks and arranged by Glen Kelly and Doug Besterman.
8 ounces = 1 cup 4 ounces = 1/2 cup So yes, 12 ounces is equal to 1 1/2 cups.
When people try to convert cups into ounces, they should multiply the number of cups by 8 to obtain the equivalent volume in ounces. For example, if someone is trying to find out how many ounces are in 10 cups, they would multiply 10 cups by 8, yielding 80 ounces.