The living room of Xiao Cong's house needs to be decorated with square bricks. The original plan was to pave with square bricks with a side length of 4 decimeters, and 250 bricks were needed; the actual paving was changed to square bricks with a side length of 5 decimeters, how many bricks are actually needed for paving? (column ratio solution)
小聪家的客厅需要铺方砖进行装修．原计划用边长4分米的方砖铺，需要250砖；实际改用边长为5分米方砖铺，实际铺完需要多少块砖？(列比例解答)
<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>