Xiaogang paints half of a piece of rectangular paper with blue, and the other half (3/4) with red. The part painted with red is the amount of this paper.
小刚将一张长方形纸的一半涂上蓝色，将另一半的(3/4)涂上红色，涂上红色的部分是这张纸的多少．
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">(1/2) * (3/4)</gadget>
<output>3/8 = around 0.375</output>

<result>3/8 = around 0.375</result>