A triangular piece of land, the base and height of this piece of land are both 35 meters, what is the area of this piece of land in square meters?
一块三角形的地，量得这块地的底和高都是35米，这块地的面积是多少平方米．
<gadget id="calculator">35 / 2</gadget>
<output>35/2 = around 17.5</output>

<gadget id="calculator">35 * (35/2)</gadget>
<output>1_225/2 = around 612.5</output>

<result>1_225/2 = around 612.5</result>