In a square field with a side length of 13 meters, 9 chrysanthemums are planted per square meter on average. How many chrysanthemums can be planted in this field?
在一块边长是13米的正方形地里，平均每平方米种9棵菊花，这块地里一共可以种多少棵菊花？
<gadget id="calculator">13 * 13 * 9</gadget>
<output>1_521</output>

<result>1_521</result>