Bizarre event with stickers

To prove that the forthcoming World Cup is very popular among many, bunch of unidentified thieves also have appeared in the news.
The following incident happened on the first weekend of June, but was reported last Wednesday between Carapachay and Munro cities who both are Buenos Aires provinces in Argentina. Even criminals are so crazy about this world sporting festival, as they stole 638 boxes of our beloved Panini stickers. These skilled robbers from the printing factory took away 10 packages destined for public sale, each package with 5 little pictures is worth 15 pesos (51 cents), which means that (according to mathematics) 31.900 stickers was missing in total.