The physical education teacher plans to divide the rectangular field with a length of 60 meters and a width of 40 meters into several identical square areas (no remainder) for game activities. How many square areas can it be divided into at least?
体育老师准备将长60米、宽40米的长方形场地分成几个相同的正方形区域(不能剩余)开展游戏活动，最少可以分成几个正方形区域？
<gadget id="calculator">60 / 20</gadget>
<output>3</output>

<gadget id="calculator">40 / 20</gadget>
<output>2</output>

<gadget id="calculator">3 * 2</gadget>
<output>6</output>

<result>6</result>