The school builds a new flower bed with a length of 40 meters and a width of 25 meters. If 20 chrysanthemums can be planted per square meter, how many chrysanthemums can be planted in this flower bed?
学校新建一个长40米，宽25米的花坛，如果每平方米可以栽20棵菊花，这个花坛共可以栽多少棵菊花？
<gadget id="calculator">40 * 25 * 20</gadget>
<output>20_000</output>

<result>20_000</result>