For an office, it takes 360 pieces to pave the floor with square bricks with a side length of 0.2 meters. If it is replaced with square bricks with a side length of 0.3 meters, how many pieces can be saved? (Solve with ratio)
一间办公室，用边长0.2米的方砖铺地需要360块，若改成用边长0.3米的方砖来铺，可少用多少块？(用比例解)
<gadget id="calculator">0.2 * 0.2 * 360</gadget>
<output>14.4</output>

<gadget id="calculator">0.3 * 0.3</gadget>
<output>0.09</output>

<gadget id="calculator">14.4 / 0.09</gadget>
<output>160</output>

<result>160</result>