A bicycle store is running a promotion. Every time a customer buys a bicycle, they will receive 2 bike clamps free with it. If the store sells 19 bikes in the morning and 27 bikes in the afternoon, how many bike clamps has the store given to customers?
In the morning, the store gives away 19 bikes * 2 bike clamps = <<19*2=38>>38 bike clamps.
In the afternoon, they give away 27 bikes * 2 bike clamps = <<27*2=54>>54 bike clamps.
So in total, the store has given away 38 + 54 = <<38+54=92>>92 bike clamps.
#### 92