A piece of rectangular paper with a side length of 4 cm and a width of 3 cm, draw a line segment from the midpoint of one side to the midpoint of the adjacent side, and cut off a corner along this line segment, what is the remaining area?
一张边长为4厘米、宽为3厘米的长方形纸，从一边的中点到邻边的中点画一条线段，沿这条线段剪去一个角，剩下的面积是多少．
<gadget id="calculator">4 * 3</gadget>
<output>12</output>

<gadget id="calculator">4 / 2</gadget>
<output>2</output>

<gadget id="calculator">3 / 2</gadget>
<output>3/2 = around 1.5</output>

<gadget id="calculator">(3/2) / 2</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">2 * (3/4)</gadget>
<output>3/2 = around 1.5</output>

<gadget id="calculator">12 - (3/2)</gadget>
<output>21/2 = around 10.5</output>

<result>21/2 = around 10.5</result>