A lawn with a length of 150 meters and a width of 3 meters is paved with square turf with a side length of 3 decimeters. How many pieces of such turf are needed?
一个长150米，宽3米的草坪，用边长是3分米的正方形草皮来铺，需要多少块这样的草皮？
<gadget id="calculator">3 * 3</gadget>
<output>9</output>

<gadget id="calculator">100 / 9</gadget>
<output>100/9 = around 11.111111</output>

<gadget id="calculator">150 * 3 * (100/9)</gadget>
<output>5_000</output>

<result>5_000</result>