The original price of a set of Olympic commemorative coins is 200 yuan, but now it has increased by (1/8), how much is the increase.
一套奥运纪念币的原价是200元，现在上涨了(1/8)，上涨了多少元．
<gadget id="calculator">1 / 8</gadget>
<output>1/8 = around 0.125</output>

<gadget id="calculator">200 * (1/8)</gadget>
<output>25</output>

<result>25</result>