Robbie gets 3 x 10 = <<3*10=30>>30 grams of fat every morning.
He gets 10 x 2 = <<10*2=20>>20 grams of fat every afternoon.
And he gets 5 x 10 = <<5*10=50>>50 grams of fat every evening.
So, the total grams of fat he gets every day is 50 + 30 + 20 = <<50+30+20=100>>100.
Therefore, the total grams of fat he gets every week is 100 x 7 = <<100*7=700>>700.
#### 700