If the base of a triangle is 4dm and the height is 10cm, what is its area?
一个三角形的底是4dm，高是10cm，则它的面积是多少平方分米
<gadget id="calculator">10 / 10 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">10 / 10</gadget>
<output>1</output>

<gadget id="calculator">(1/2) * 4 * 1</gadget>
<output>2</output>

<result>2</result>