bag of salt weighs (11/20) kilograms. If you bought 30 bags of this kind of salt in the cafeteria, how much does it weigh in total?
一袋盐重(11/20)千克，食堂里买了30袋这样的食盐，一共重多少千克？
<gadget id="calculator">11 / 20</gadget>
<output>11/20 = around 0.55</output>

<gadget id="calculator">(11/20) * 30</gadget>
<output>33/2 = around 16.5</output>

<result>33/2 = around 16.5</result>