There are 10 steps in a staircase. If it is stipulated that only one or two steps can be taken at a time, how many different ways are there to climb up to the 10th step?
有一楼梯共有10级，如规定每次只能跨上一级或二级，要登上第10级，共有多少种不同走法？
<gadget id="calculator">2 * 1</gadget>
<output>2</output>

<gadget id="calculator">7 / 2</gadget>
<output>7/2 = around 3.5</output>

<gadget id="calculator">8 * (7/2)</gadget>
<output>28</output>

<gadget id="calculator">3 * 2 * 1</gadget>
<output>6</output>

<gadget id="calculator">5 / 6</gadget>
<output>5/6 = around 0.833333</output>

<gadget id="calculator">7 * 6 * (5/6)</gadget>
<output>35</output>

<gadget id="calculator">4 * 3 * 2 * 1</gadget>
<output>24</output>

<gadget id="calculator">3 / 24</gadget>
<output>1/8 = around 0.125</output>

<gadget id="calculator">6 * 5 * 4 * (1/8)</gadget>
<output>15</output>

<gadget id="calculator">1 + 9 + 28 + 35 + 15 + 1</gadget>
<output>89</output>

<result>89</result>