[Question]: A bird eats 7 berries a day. Samuel has 5 birds. How many berries do Samuel's birds eat in 4 days?
[Answer]: A bird eats 7 x 4 = 28 berries in 4 days. So, 5 birds can eat 28 x 5 = 140 berries in 4 days.
So the answer is 140.

[Question]: Marcy had 22 sodas in her fridge for a party. Her friend Tina came over and gave her 12 plus two times the number of sodas Marcy had before. How many sodas will Marcy have for the party?
[Answer]: Two times the sodas Marcy had is 22 * 2 = 44. Tina gave Marcy 44 + 12 = 56 soda. In total Marcy has 22 + 56 = 78 sodas.
So the answer is 78.

[Question]: Jerry takes 2 antacids that weigh 2 grams each and are 5% zinc by weight. Then he takes three more smaller antacids that weigh 1 gram each and have 15% zinc. How many milligrams of zinc does he eat?
[Answer]:
First find the total weight of the big antacids: 2 grams / antacid * 2 antacids = 4 grams. Then convert that weight to milligrams: 4 grams * 1000 mg / gram = 4000 mg. Then multiply that number by 5% to find how much zinc is in the big antacids: 4000 mg * 5% = 200 mg. Then find the total weight of the smaller antacids in milligrams: 3 antacids * 1 gram / antacid * 1000 mg / gram = 3000 mg. Then multiply that number by the percent of zinc to find the amount of zinc in the small antacids: 3000 mg * 15% = 450 mg. Then add the zinc Jerry gets from each set of pills to find the total amount of zinc he eats: 450 mg + 200 mg = 650 mg.
So the answer is 650.