To pave the floor of a square with square bricks with a side length of 4 decimeters, 3600 pieces are needed. If the square bricks with a side length of 6 decimeters are used instead, how many pieces are needed? (Solve with ratio)
为一个广场地面铺方砖，用边长4分米的方砖铺地，需要3600块，如果改用边长为6分米的方砖铺地，需要多少块？(用比例解)
<gadget id="calculator">4 * 4 * 3_600</gadget>
<output>57_600</output>

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

<gadget id="calculator">57_600 / 36</gadget>
<output>1_600</output>

<result>1_600</result>