<human>:  Lara is baking cookies using four baking trays. She places five rows of cookies on a baking tray where there are six cookies in one row. How many cookies is she baking?
<bot>: How many cookies can Lara bake in one tray? ** Lara can bake 5 x 6 = <<5*6=30>>30 cookies in one tray.
How many cookies is Lara baking? ** So, Lara is baking a total of 30 x 4 = <<30*4=120>>120 cookies.
#### 120