A blackboard is (5/2) meters long and (1/2) wide. What is the area of this blackboard in square meters?
一块黑板长(5/2)米，宽是长的(1/2)．这块黑板的面积是多少平方米？
<gadget id="calculator">5 / 2</gadget>
<output>5/2 = around 2.5</output>

<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">(5/2) * (1/2)</gadget>
<output>5/4 = around 1.25</output>

<gadget id="calculator">(5/2) * (5/4)</gadget>
<output>25/8 = around 3.125</output>

<result>25/8 = around 3.125</result>