From the first set of meals, the restaurant earned 10 meals * $8 = $<<10*8=80>>80.
From the second set of meals, the restaurant earned 5 meals * $10 = $<<5*10=50>>50.
From the third set of meals, the restaurant earned 20 meals * $4 = $<<20*4=80>>80.
In total, the restaurant earned $80 + $50 + $80 = $<<80+50+80=210>>210.
#### 210