The living room of Xiaoming's house is a rectangle. According to the original plan, the square bricks with a side length of 4dm will cost 250 pieces. How many bricks would be needed if the square bricks with a side length of 5dm were used instead? (Solve with ratio)
小明家的客厅是一个长方形，按原计划选用边长是4dm的方砖铺需要250块．如果改用边长是5dm的方砖来铺需要多少块？(用比例解)
<gadget id="calculator">4 * 4 * 250</gadget>
<output>4_000</output>

<gadget id="calculator">5 * 5</gadget>
<output>25</output>

<gadget id="calculator">4_000 / 25</gadget>
<output>160</output>

<result>160</result>