A drink is prepared with fruit juice and water at a ratio of 3:10. To make 500 grams of this drink, how many grams of fruit juice is needed?
一种饮料，是用果汁和水按3：10的比配制而成，要配制这种饮料500克，需要果汁多少克？
<gadget id="calculator">3 + 10</gadget>
<output>13</output>

<gadget id="calculator">3 / 13</gadget>
<output>3/13 = around 0.230769</output>

<gadget id="calculator">500 * (3/13)</gadget>
<output>1_500/13 = around 115.384615</output>

<result>1_500/13 = around 115.384615</result>