A medicinal powder liquid, the mass ratio of medicinal powder to water is 1:40. The current water is 240 grams, how many grams of powder should be added.
一种药粉药液，药粉与水的质量比是1：40．现用水240克，应加药粉多少克．
<gadget id="calculator">240 / 40</gadget>
<output>6</output>

<gadget id="calculator">6 * 1</gadget>
<output>6</output>

<result>6</result>