Tonya is in a hamburger eating contest. Each hamburger is 4 ounces. Last year the winner ate 84 ounces. How many hamburgers does she have to eat to beat last year's winner?
Last year's winner ate 21 hamburgers because 84 / 4 = <<84/4=21>>21
She needs to eat 22 hamburgers because 21 + 1 = <<21+1=22>>22
#### 22