["Find total units: 2 + 7 = 9 units. Each unit = 126 / 9 = 14 items.","Cakes = 2 x 14 = 28. Half are chocolate cakes (1:1 ratio), so 14 chocolate cakes.","Muffins = 7 x 14 = 98. Chocolate:muffin = 4:3 so chocolate muffins = 4/7 x 98 = 56. Total chocolate = 14 + 56 = 70."]