For the chocolate cakes: Leila should pay: 12 * 3 = $<<12*3=36>>36
For the strawberry cakes: Leila should pay: 22 * 6 = $<<22*6=132>>132
Combining the chocolate cakes and strawberry cakes, Leila should pay: 36 +132 = $<<36+132=168>>168
#### 168