The sixth grade students of a school made 580 red and blue bouquets for the school sports meeting, among which the red bouquet (1/4) and the blue bouquet (1/5) were made by a classmate, and the rest 448 were made by other classmates, so how many red bouquets did a class make?
某校六年级学生为校运动会制做了红蓝两色的花束580支，其中红色花束的(1/4)与蓝色花束的(1/5)是由一班同学制做的，其余的448支是由其它几个班同学制做的，那么一班同学制做了多少支红色花束．
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">320 * (1/4)</gadget>
<output>80</output>

<result>80</result>