In 2004, a strong earthquake occurred in the Indian Ocean and triggered a tsunami, causing 5 million people to be affected. The international community carried forward the humanitarian spirit and donated relief tents for the victims. Each tent covers an area of 50 square meters and can house 20 victims. How much land is needed to house all the victims?
2004年印度洋发生了强烈地震，并引发海啸，造成500万人受灾，国际社会发扬人道主义精神为灾民捐助救灾帐篷．每顶帐篷占地50平方米，可安置20个灾民，要安置所有灾民需占地多少
<gadget id="calculator">5_000_000 / 20</gadget>
<output>250_000</output>

<gadget id="calculator">250_000 * 50</gadget>
<output>12_500_000</output>

<result>12_500_000</result>