A bag of bread weighs (3/10) kg, what is the weight of 3 bags of bread in kg?
一袋面包重(3/10)千克，3袋面包重多少千克．
<gadget id="calculator">3 / 10</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">(3/10) * 3</gadget>
<output>9/10 = around 0.9</output>

<result>9/10 = around 0.9</result>