The school built a new flower bed with a length of 35 meters and a width of 15 meters. If 15 roses can be planted per square meter, how many roses can be planted in this flower bed?
学校新建了一个长35米、宽15米的花坛，如果每平方米可以栽15棵月季花，这个花坛共可以栽多少棵月季花？
<gadget id="calculator">35 * 15</gadget>
<output>525</output>

<gadget id="calculator">525 * 15</gadget>
<output>7_875</output>

<result>7_875</result>