To pave a classroom with square bricks with a side length of 4 cm, 1500 pieces are needed. If you use square bricks with a side length of 5cm instead, how many pieces are needed? (column equation solution)
用边长4cm的方砖给教室铺地，需要1500块．如果改用边长5cm的方砖铺地，需要多少块？(列方程解答)
<gadget id="calculator">4 * 4 * 1_500</gadget>
<output>24_000</output>

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

<gadget id="calculator">24_000 / 25</gadget>
<output>960</output>

<result>960</result>