5 geckos on the kitchen window eat 6 insects each. 3 lizards eat twice as much as the geckos.  How many total insects were eaten?
The number of insects the geckos eat is 5 x 6 = <<5*6=30>>30.
The number of insects the lizards eat is 3 x 12 = <<3*12=36>>36.
The total number of insects eaten is 30 + 36 = <<30+36=66>>66 insects.
#### 66