Liangliang’s family has built a new house and plans to use square floor tiles with a side length of 0.4 meters to decorate the floor of the living room. This requires 180 yuan. The decoration teacher suggested using square floor tiles with an area of 0.36 square meters instead. Please calculate how much you need? (answer with ratio)
亮亮家造了新房，准备用边长是0.4米的正方形地砖装饰客厅地面，这样需要180块，装修老师建议改用面积是0.36平方米的正方形地砖铺地．请你算一算需要多少块？(用比例解答)
<gadget id="calculator">0.4 * 0.4</gadget>
<output>0.16</output>

<gadget id="calculator">180 / 0.36</gadget>
<output>500</output>

<gadget id="calculator">0.16 * 500</gadget>
<output>80</output>

<result>80</result>