If a house needs to be paved with square bricks, 100 square bricks with a side length of 4 decimeters are needed. If the square bricks with an area of 25 square decimeters are used instead, how many square bricks are needed? (Solve with ratio)
一间房子要用方砖铺地，用边长是4分米的方砖，需用100块，如果改用面积是25平方分米的方砖，需用多少块？(用比例解)
<gadget id="calculator">4 * 4 * 100</gadget>
<output>1_600</output>

<gadget id="calculator">1_600 / 25</gadget>
<output>64</output>

<result>64</result>