The Qiaoli clothing store bought 72 meters of cloth, which can be used to make 20 adult clothes and 16 children's clothes. Each piece of adult clothes uses 2.4 meters of cloth, how much meter does each piece of children's clothes save compared to adults' clothes?
俏丽服装店买来72米布，正好可以做20件大人衣服和16件儿童衣服．每件大人衣服用布2.4米，每件儿童衣服用布比大人衣服省多少米？
<gadget id="calculator">20 * 2.4</gadget>
<output>48</output>

<gadget id="calculator">72 - 48</gadget>
<output>24</output>

<gadget id="calculator">24 / 16</gadget>
<output>3/2 = around 1.5</output>

<gadget id="calculator">2.4 - (3/2)</gadget>
<output>0.9</output>

<result>0.9</result>