Each hot dog symbol represents 12 hot dogs sold, so:

Game 1: $\displaystyle{12}\cdot{7}={84}\usepackage{cmbright}\Huge\$

Game 2: $\displaystyle{12}\cdot{2}={24}\usepackage{cmbright}\Huge\$

Game 3: $\displaystyle{12}\cdot{5}={60}\usepackage{cmbright}\Huge\$