The base of a parallelogram is 10 cm, the height is 8 cm, connect the midpoints of two adjacent sides, and cut off a triangle along this line segment, what is the remaining area in square centimeters?
一个平行四边形的底是10厘米，高是8厘米，连接相邻两边的中点，沿这条线段剪去一个三角形，剩下的面积是多少平方厘米．
<gadget id="calculator">10 * 8</gadget>
<output>80</output>

<gadget id="calculator">10 / 2</gadget>
<output>5</output>

<gadget id="calculator">8 / 2</gadget>
<output>4</output>

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

<gadget id="calculator">5 * 2</gadget>
<output>10</output>

<gadget id="calculator">80 - 10</gadget>
<output>70</output>

<result>70</result>