A triangle has a base of 5 meters and a height of 3 meters. If the base is extended by 1 meter, what is the area of the triangle in square meters?
一个三角形的底是5米，高是3米．如果将底延长1米，这个三角形的面积是多少平方米？
<gadget id="calculator">5 + 1</gadget>
<output>6</output>

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

<gadget id="calculator">6 * (3/2)</gadget>
<output>9</output>

<result>9</result>