Using square bricks with an area of 16 square decimeters, 180 bricks are exactly covered. If you use square bricks with a side length of 6 decimeters, how many pieces are needed?
用面积16平方分米的方砖，180块正好铺满．如果用边长是6分米的方砖，需要多少块？
<gadget id="calculator">6 * 6</gadget>
<output>36</output>

<gadget id="calculator">16 / 36</gadget>
<output>4/9 = around 0.444444</output>

<gadget id="calculator">180 * (4/9)</gadget>
<output>80</output>

<result>80</result>