It takes 250 bricks to pave a house with a side length of 4 decimeters, how many bricks are needed if the side length is 5 decimeters instead?
给一间房子铺边长为4分米方砖要250块，若改用边长为5分米的方砖需要多少块呢？
<gadget id="calculator">4 * 4</gadget>
<output>16</output>

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

<gadget id="calculator">250 / 25</gadget>
<output>10</output>

<gadget id="calculator">16 * 10</gadget>
<output>160</output>

<result>160</result>