Multiply 2 digit numbers up to 100

{"ad_unit_id":"App_Resource_Sidebar_Upper","width":300,"height":250,"rtype":"note","rmode":"view","sizes":"[[[0, 0], [[300, 250]]]]","custom":[{"key":"env","value":"production"},{"key":"rtype","value":"note"},{"key":"rmode","value":"view"},{"key":"uauth","value":"f"},{"key":"ulang","value":"en_us"}]}