First find the number of tablespoons in a full cup: 8 tablespoons/half-cup * 2 half-cups/cup = <<8*2=16>>16 tablespoons
Then find the total number of teaspoons in a cup: 16 tablespoons/cup * 3 teaspoons/tablespoon = <<16*3=48>>48 teaspoons
Then find the number of grains of rice per teaspoon: 480 grains / 48 teaspoons = <<480/48=10>>10 grains/teaspoon
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