Use square tiles to pave the floor of the room, and tiles with a side length of 4 decimeters, a total of 300 pieces are needed. How many tiles are needed in total if you use tiles with a side length of 8 decimeters instead? (Use proportions to answer.)
用正方形的瓷砖铺房间的地面，用边长4分米的瓷砖来铺，一共需要300块．如果改用边长是8分米的瓷砖，一共需要多少块？(用比例解答．)
<gadget id="calculator">4 * 4 * 300</gadget>
<output>4_800</output>

<gadget id="calculator">8 * 8</gadget>
<output>64</output>

<gadget id="calculator">4_800 / 64</gadget>
<output>75</output>

<result>75</result>