On Children's Day, Fangfang went to Nanhu Park with her grandfather, father, and mother. Children's tickets were half priced at 6.5 yuan each. How much did they spend on the tickets?
六一儿童节那天，芳芳和爷爷、爸爸、妈妈去南湖公园游玩，儿童门票半价，每张6.5元，他们买门票一共花多少钱？
<gadget id="calculator">6.5 * 2 * 3</gadget>
<output>39</output>

<gadget id="calculator">39 + 6.5</gadget>
<output>45.5</output>

<result>45.5</result>