Divide a watermelon into 8 pieces, Xiao Ming eats 2 pieces, what fraction is left?
把一个西瓜平分成8块，小明吃了2块，还剩几分之几？
<gadget id="calculator">2 / 8</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1 - (1/4)</gadget>
<output>3/4 = around 0.75</output>

<result>3/4 = around 0.75</result>