Among the natural numbers from 1 to 200, how many of them do not contain 8 in each digit?
由1到200的自然数中，各位数上都不含8的有多少个．
<gadget id="calculator">10 + 9</gadget>
<output>19</output>

<gadget id="calculator">19 * 2</gadget>
<output>38</output>

<gadget id="calculator">200 - 38</gadget>
<output>162</output>

<result>162</result>