A shampoo, 600 grams in a large bottle, 120 grams in a small bottle, how much less the small bottle is than the large bottle
一种洗发液，大瓶装600克，小瓶装120克，小瓶比大瓶少装多少
<gadget id="calculator">600 - 120</gadget>
<output>480</output>

<gadget id="calculator">480 / 600</gadget>
<output>4/5 = around 0.8</output>

<result>4/5 = around 0.8</result>