To pave a classroom, it takes 160 square bricks with an area of 0.36 square meters; if the square bricks with an area of 0.64 square meters are used instead, how many such square bricks are needed? (Solve with ratio)
给一间教室铺地，用面积为0.36平方米的方砖铺要用160块；如果改用面积为0.64平方米的方砖铺，需要多少块这样的方砖？(用比例解)
<gadget id="calculator">0.36 * 160</gadget>
<output>57.6</output>

<gadget id="calculator">57.6 / 0.64</gadget>
<output>90</output>

<result>90</result>