According to the statistics of the United Nations, in 2010, there were about 150 million poor people in China, accounting for 3/34 of the world's poor population, and the world's poor population accounted for 17/70 of the world's total population. How many billion people are there in the world's total population?
据联合国统计，2010年中国贫困人口约1.5亿人，占世界贫困人口的(3/34)，世界贫困人口占世界总人口的(17/70)．世界总人口有多少亿人？
<gadget id="calculator">3 / 34</gadget>
<output>3/34 = around 0.088235</output>

<gadget id="calculator">17 / 70</gadget>
<output>17/70 = around 0.242857</output>

<gadget id="calculator">1.5 / (3/34) / (17/70)</gadget>
<output>70</output>

<result>70</result>