A room is paved with square bricks with a side length of 8 decimeters, and 90 pieces are needed. If the square bricks with a side length of 6 decimeters are used instead, how many pieces are needed?
一房间铺地砖，用边长是8分米的方砖，需要90块，如果改用边长是6分米的方砖，需要多少块？
<gadget id="calculator">8 * 8 * 90</gadget>
<output>5_760</output>

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

<gadget id="calculator">5_760 / 36</gadget>
<output>160</output>

<result>160</result>