The master worker uses 360 floor tiles with an area of 4 square decimeters to cover a room. If you use floor tiles with an area of 9 square decimeters, how many pieces are needed? (Solve with ratio)
工人师傅用360块面积4平方分米的地砖正好铺满一间房间，如果改用面积9平方分米的地砖，需要多少块？(用比例解)
<gadget id="calculator">4 * 360</gadget>
<output>1_440</output>

<gadget id="calculator">1_440 / 9</gadget>
<output>160</output>

<result>160</result>