Question: How many children work year round in the continent that contains the river that serves as drainage for the southwest plain of the Congo?

<P0-S0> The southwest of the country is a coastal plain for which the primary drainage is the Kouilou-Niari River; the interior of the country consists of a central plateau between two basins to the south and north. <P0-S1> Forests are under increasing exploitation pressure. <SEP> <P1-S0> home-based manufacturing operations were active year round. <P1-S1> families willingly deployed their children in these income generating home enterprises. <P1-S2> in many cases, men worked from home. <P1-S3> in france, over 58 percent of garment workers operated out of their homes; in germany, the number of full-time home operations nearly doubled between 1882 and 1907; and in the united states, millions of families operated out of home seven days a week, year round to produce garments, shoes, artificial flowers, feathers, match boxes, toys, umbrellas and other products. <P1-S4> children aged 5–14 worked alongside the parents. <P1-S5> home-based operations and child labour in australia, britain, austria and other parts of the world was common. <P1-S6> rural areas similarly saw families deploying their children in agriculture. <P1-S7> in 1946, frieda miller - then director of united states department of labour - told the international labour organisation that these home-based operations offered, "low wages, long hours, child labour, unhealthy and insanitary working conditions." <SEP> <P2-S0> Mayombe (or Mayumbe) is a geographic area on the western coast of Africa occupied by low mountains extending from the mouth of the Congo River in the south to the Kouilou-Niari River to the north. <P2-S1> The area includes parts of the Democratic Republic of the Congo, Angola (Cabinda Province), the Republic of the Congo and Gabon. <SEP> <P3-S0> several governments maintain permanent manned research stations on the continent. <P3-S1> the number of people conducting and supporting scientific research and other work on the continent and its nearby islands varies from about 1,000 in winter to about 5,000 in the summer, giving it a population density between 70 and 350 inhabitants per million square kilometres (180 and 900 per million square miles) at these times. <P3-S2> many of the stations are staffed year-round, the winter-over personnel typically arriving from their home countries for a one-year assignment. <P3-S3> an orthodox church—trinity church, opened in 2004 at the russian bellingshausen station—is manned year-round by one or two priests, who are similarly rotated every year. <SEP> <P4-S0> Children working at a young age has been a consistent theme throughout Africa. <P4-S1> Many children began first working in the home to help their parents run the family farm. <P4-S2> Children in Africa today are often forced into exploitative labour due to family debt and other financial factors, leading to ongoing poverty. <P4-S3> Other types of domestic child labour include working in commercial plantations, begging, and other sales such as boot shining. <P4-S4> In total, there is an estimated five million children who are currently working in the field of agriculture which steadily increases during the time of harvest. <P4-S5> Along with 30 percent of children who are picking coffee, there are an estimated 25,000 school age children who work year round.