###Human: 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?, ### Assistant: In the morning, the store gives away 19 bikes * 2 bike clamps = 38 bike clamps.
In the afternoon, they give away 27 bikes * 2 bike clamps = 54 bike clamps.
So in total, the store has given away 38 + 54 = 92 bike clamps. 
 So the answer is :  92