It is known that the base of the triangle is 6.4 meters and the height is 4.5 meters less than the base. What is the area of the triangle?
已知三角形的底是6.4米，高比底少4.5米，这个三角形的面积是多少？
<gadget id="calculator">6.4 - 4.5</gadget>
<output>1.9</output>

<gadget id="calculator">1.9 / 2</gadget>
<output>0.95</output>

<gadget id="calculator">6.4 * 0.95</gadget>
<output>6.08</output>

<result>6.08</result>