Human: David has $12.48 and wants to buy 16 bolts from a bin at the hardware store. Each bolt costs $0.03. How much money does David have left after paying for the bolts? Assistant: 
How much did David pay for the bolts? ** David paid 16 * 0.03 = $<<16*0.03=0.48>>0.48 for the bolts.
How much money does David have left after paying for the bolts? ** David has $12.48 - $0.48 = $12 left.
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