A ribbon is (4/5) meters long, what is the total length of 3 such ribbons in meters?
一条丝带长(4/5)米，3条这样的丝带总长多少米．
<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">(4/5) * 3</gadget>
<output>12/5 = around 2.4</output>

<result>12/5 = around 2.4</result>