A professional user of pig raising raised 800 pigs last year, but this year they raised less (1/8) than last year. How many fewer pigs were raised this year than last year?
一个养猪专业用户去年养猪800头，今年比去年少养了(1/8)，今年比去年少养了几头？
<gadget id="calculator">1 / 8</gadget>
<output>1/8 = around 0.125</output>

<gadget id="calculator">800 * (1/8)</gadget>
<output>100</output>

<result>100</result>