The daughter and her 3 friends each want 1.5 servings of pancakes so that’s 4*1.5 = <<1.5*4=6>>6 servings of pancakes
Willow’s son wants 3 servings of pancakes and the girls want 6 so that’s 3+6 = <<3+6=9>>9 servings of pancakes
Each serving makes 4 pancakes and Willow needs to make 9 servings for a total of 4*9 = <<4*9=36>>36 pancakes
#### 36