A steel bar (5/2) meters long weighs (3/10) kilograms, what is the weight of this steel bar in kilograms per meter.
一根(5/2)米长的钢筋，重(3/10)千克，这种钢筋每米重多少千克．
<gadget id="calculator">3 / 10</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">5 / 2</gadget>
<output>5/2 = around 2.5</output>

<gadget id="calculator">(3/10) / (5/2)</gadget>
<output>3/25 = around 0.12</output>

<result>3/25 = around 0.12</result>