<human>:  Harry decided to buy some balloons for his friend's birthday party. One balloon costs $0.5, and a pack of 10 balloons is cheaper and costs only $3. Finally, Harry wants to bring to the party exactly 14 balloons. How much did he need to pay for them?
<bot>: How many balloons does Harry need to buy? ** To buy 14 balloons, Harry should buy one pack of 10, and 14 - 10 = <<14-10=4>>4 separate balloons.
How much do the 4 balloons cost? ** The price of 4 balloons is 4 * 0.5 = $<<4*0.5=2>>2.
How much does Harry need to pay for the balloons? ** In total, the pack and separate balloons would cost Harry in total 3 + 2 = $<<3+2=5>>5.
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