Obviously, if you use square bricks to pave the floor at home, you need 250 square bricks with a side length of 4 decimeters. If you use square bricks with a side length of 5 decimeters, how many pieces will you need? (Please use proportional knowledge to answer)
明明家用方砖铺地，用边长为4分米的方砖需要250块，如果改用边长为5分米的方砖，需要多少块？(请用比例知识解答)
<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>