There are 150 athletes participating in a school sports meeting, and the number of spectators is four times that of the athletes. If you prepare a bouquet of flowers for each audience, how many bouquets do you need to prepare?
学校开运动会，有150名运动员参加，观众的人数是运动员的4倍，如果给每一位观众准备一束花，需要准备多少束花？
<gadget id="calculator">150 * 4</gadget>
<output>600</output>

<result>600</result>