In 1976, my country collected a meteorite weighing 1,770 kilograms. Before that, a meteorite in the United States known as "the world's largest" was 39% less in mass than this meteorite in my country. How many kilograms does the meteorite known as "the world's largest" weigh in the United States?
1976年，我国收集到了一块陨石重1770千克，而这以前，美国的一块号称"世界之最"的陨石比我国的这块陨石质量少39%．美国的号称"世界之最"的陨石重多少千克？
<gadget id="calculator">39 / 100</gadget>
<output>39/100 = around 0.39</output>

<gadget id="calculator">1 - (39/100)</gadget>
<output>61/100 = around 0.61</output>

<gadget id="calculator">1_770 * (61/100)</gadget>
<output>10_797/10 = around 1_079.7</output>

<result>10_797/10 = around 1_079.7</result>