A bag of bread weighs (3/10) kg, what is the weight of 4 bags of bread in kg
一袋面包重(3/10)kg，则4袋面包重多少kg
<gadget id="calculator">3 / 10</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">(3/10) * 4</gadget>
<output>6/5 = around 1.2</output>

<result>6/5 = around 1.2</result>