The living room of Mr. Wang’s house is 6 meters long and 5 meters wide. Now it is necessary to pave the living room with square floor tiles with a side length of 2 decimeters. How many pieces are needed in total?
王老师家的客厅长6米，宽5米，现在要给客厅铺上边长是2分米的正方形地砖，一共需要铺多少块？
<gadget id="calculator">2 * 2</gadget>
<output>4</output>

<gadget id="calculator">100 / 4</gadget>
<output>25</output>

<gadget id="calculator">6 * 5 * 25</gadget>
<output>750</output>

<result>750</result>