The school uses square bricks to pave the floor of the conference room. Originally planned to use square bricks with a side length of 50cm, 540 pieces were needed. Now switch to square bricks with a side length of 60cm, how many pieces are needed? (solution by equation)
学校用方砖铺会议室的地面．原来打算用边长50cm的方砖，需要540块．现在改用边长60cm的方砖，需要多少块？(用方程解)
<gadget id="calculator">50 * 50 * 540</gadget>
<output>1_350_000</output>

<gadget id="calculator">60 * 60</gadget>
<output>3_600</output>

<gadget id="calculator">1_350_000 / 3_600</gadget>
<output>375</output>

<result>375</result>