The school purchased 60 ceiling fans, and floor fans were 50% less than ceiling fans. How many ceiling fans and floor fans did they buy?
学校购买吊扇60台，购买落地式电扇比吊扇少50%，吊扇和落地扇共购买了多少台？
<gadget id="calculator">50 / 100</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">1 - (1/2)</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">60 * (1/2)</gadget>
<output>30</output>

<gadget id="calculator">30 + 60</gadget>
<output>90</output>

<result>90</result>