A rectangular piece of paper, (1/8) is painted red, 3% is painted blue, what percentage of the paper is not painted?
一张长方形的纸，(1/8)涂红色，3%涂蓝色，没涂的占这张纸的几分之几？
<gadget id="calculator">1 / 8</gadget>
<output>1/8 = around 0.125</output>

<gadget id="calculator">3 / 100</gadget>
<output>3/100 = around 0.03</output>

<gadget id="calculator">1 - (1/8) - (3/100)</gadget>
<output>169/200 = around 0.845</output>

<result>169/200 = around 0.845</result>