The T40 express train from Daqing to Beijing stops at 8 stations including Harbin, Changchun, Shenyang, Jinzhou, Huludao, Shanhaiguan, Tangshan and Tianjin. How many different tickets will the railway bureau prepare for this express train?
从大庆到北京的T40快车，中途要停靠哈尔滨、长春、沈阳、锦州、葫芦岛、山海关、唐山、天津等8个站．铁路局要为这次快车准备多少种不同的车票？
<gadget id="calculator">8 + 2</gadget>
<output>10</output>

<gadget id="calculator">10 - 1</gadget>
<output>9</output>

<gadget id="calculator">10 * 9</gadget>
<output>90</output>

<result>90</result>