To lay tiles with a side length of 4 decimeters on the floor, 90 tiles are needed; how many tiles are needed to lay tiles with a side length of 6 decimeters?
要在地板上铺边长是4分米的瓷砖，需要90块；铺边长是6分米的瓷砖，需要多少块？
<gadget id="calculator">4 * 4 * 90</gadget>
<output>1_440</output>

<gadget id="calculator">6 * 6</gadget>
<output>36</output>

<gadget id="calculator">1_440 / 36</gadget>
<output>40</output>

<result>40</result>