The dosage of a drug is: 0.06 grams per kilogram of body weight for an adult, which is 2.5 times the dosage per kilogram of body weight for a child. If there is a child in the kindergarten class who weighs 20 kilograms, how many grams can he use each time?
一种药品的用药量是：成人每千克体重每次用药0.06克，是一个儿童每千克体重每次用药量的2.5倍．如果幼儿园大班有个小朋友的体重是20千克，他每次只能用药多少克？
<gadget id="calculator">0.06 / 2.5</gadget>
<output>0.024</output>

<gadget id="calculator">0.024 * 20</gadget>
<output>0.48</output>

<result>0.48</result>