If you use square bricks to lay the area of a warehouse, if you use square bricks with a side length of 8 decimeters, you need 200 pieces. If you use square bricks with a side length of 10 decimeters, how many pieces do you need? (Solve with ratio)
用方砖铺设一间仓库的面积，如果用边长8分米的方砖，需要200块，如果改用边长10分米的方砖，需要多少块？(用比例解)
<gadget id="calculator">8 * 8 * 200</gadget>
<output>12_800</output>

<gadget id="calculator">10 * 10</gadget>
<output>100</output>

<gadget id="calculator">12_800 / 100</gadget>
<output>128</output>

<result>128</result>