Xiaoming’s living room is 7 meters long and 5 meters wide. If 4 square bricks are needed per square meter, how many square bricks are needed in total?
小明家的客厅长7米，宽5米，如果每平方米需要方砖4块，一共需要这样的方砖多少块？
<gadget id="calculator">7 * 5 * 4</gadget>
<output>140</output>

<result>140</result>