One hundred thousand children stand in a line holding hands, the line is 130 kilometers long, and one billion children stand in a line holding hands. How many kilometers should this line be?
十万个小朋友手拉手站成一行，这一行长130千米，十亿个小朋友手拉手站成一行．这一行长应有多少千米
<gadget id="calculator">10_000 * 130</gadget>
<output>1_300_000</output>

<result>1_300_000</result>