Xiaohui goes to the zoo with her father, mother, grandpa, grandma and younger brother. The ticket price is 8.5 yuan for adults and 4.5 yuan for children. How much does Xiaohui's family spend on selling tickets?
小慧和爸爸、妈妈、爷爷、奶奶、弟弟去动物园，门票票价成人每张8.5元，儿童每张4.5元．小慧一家卖门票一共要花多少钱？
<gadget id="calculator">8.5 * 4</gadget>
<output>34</output>

<gadget id="calculator">4.5 * 2</gadget>
<output>9</output>

<gadget id="calculator">34 + 9</gadget>
<output>43</output>

<result>43</result>