How many kilograms are 60 pieces of 500 grams?
60个500克是多少千克．
<gadget id="calculator">60 / 1_000</gadget>
<output>3/50 = around 0.06</output>

<gadget id="calculator">500 * (3/50)</gadget>
<output>30</output>

<result>30</result>